TY  - JOUR
AU  - Elhmali, Houda Taher
AU  - Stajčić, Ivana
AU  - Stajčić, Aleksandar
AU  - Pešić, Ivan
AU  - Jovanović, Marija
AU  - Petrović, Miloš
AU  - Radojević, Vesna
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7427
AB  - While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.
PB  - MDPI
T2  - Polymers
T1  - Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior
VL  - 16
IS  - 2
SP  - 278
DO  - 10.3390/polym16020278
ER  - 

@article{
author = "Elhmali, Houda Taher and Stajčić, Ivana and Stajčić, Aleksandar and Pešić, Ivan and Jovanović, Marija and Petrović, Miloš and Radojević, Vesna",
year = "2024",
abstract = "While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.",
publisher = "MDPI",
journal = "Polymers",
title = "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior",
volume = "16",
number = "2",
pages = "278",
doi = "10.3390/polym16020278"
}

Elhmali, H. T., Stajčić, I., Stajčić, A., Pešić, I., Jovanović, M., Petrović, M.,& Radojević, V.. (2024). Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers
MDPI., 16(2), 278.
https://doi.org/10.3390/polym16020278

Elhmali HT, Stajčić I, Stajčić A, Pešić I, Jovanović M, Petrović M, Radojević V. Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers. 2024;16(2):278.
doi:10.3390/polym16020278 .

Elhmali, Houda Taher, Stajčić, Ivana, Stajčić, Aleksandar, Pešić, Ivan, Jovanović, Marija, Petrović, Miloš, Radojević, Vesna, "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior" in Polymers, 16, no. 2 (2024):278,
https://doi.org/10.3390/polym16020278 . .

TY  - CONF
AU  - Pešić, Ivan
AU  - Rašljić-Rafajilović, Milena
AU  - Vasiljević-Radović, Dana
AU  - Ostojić, Sanja
AU  - Petrović, Miloš
AU  - Radojević, Vesna
AU  - Pergal, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6690
AB  - The present study reports on the preparation of nanocomposites consisting of polyurethane (PU) as the matrix and Ti 3 C 2 T x MXene as the nanofiller, utilizing an in-situ polymerization method. The synthesis parameters of polyurethane remained constant, while the method of adding and preparing MXene was varied. The MXene content was maintained at 1 wt.% for all prepared nanocomposites, and the soft segment content was held constant as well. For the characterization of our materials, FTIR, SEM, TGA and tensile tests were employed. Also, the properties of the prepared nanocomposites were compared to pure PU. FTIR spectra confirmed the formation of urethane bonds. SEM images demonstrated the dispersion state of MXene in the polymer matrix. TGA revealed higher thermal stability of the prepared nanocomposites compared to pure PU. Moreover, the Young’s modulus and tensile strength increased for all prepared nanocomposites.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
C3  - 10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June 2023, East Sarajevo, Bosnia and Herzegovina
T1  - Optimization of reaction parameters for preparation  of MXene-based polymer nanocomposites
SP  - 23488337
DO  - 10.1109/IcETRAN59631.2023.10192211
ER  - 

@conference{
author = "Pešić, Ivan and Rašljić-Rafajilović, Milena and Vasiljević-Radović, Dana and Ostojić, Sanja and Petrović, Miloš and Radojević, Vesna and Pergal, Marija",
year = "2023",
abstract = "The present study reports on the preparation of nanocomposites consisting of polyurethane (PU) as the matrix and Ti 3 C 2 T x MXene as the nanofiller, utilizing an in-situ polymerization method. The synthesis parameters of polyurethane remained constant, while the method of adding and preparing MXene was varied. The MXene content was maintained at 1 wt.% for all prepared nanocomposites, and the soft segment content was held constant as well. For the characterization of our materials, FTIR, SEM, TGA and tensile tests were employed. Also, the properties of the prepared nanocomposites were compared to pure PU. FTIR spectra confirmed the formation of urethane bonds. SEM images demonstrated the dispersion state of MXene in the polymer matrix. TGA revealed higher thermal stability of the prepared nanocomposites compared to pure PU. Moreover, the Young’s modulus and tensile strength increased for all prepared nanocomposites.",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
journal = "10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June 2023, East Sarajevo, Bosnia and Herzegovina",
title = "Optimization of reaction parameters for preparation  of MXene-based polymer nanocomposites",
pages = "23488337",
doi = "10.1109/IcETRAN59631.2023.10192211"
}

Pešić, I., Rašljić-Rafajilović, M., Vasiljević-Radović, D., Ostojić, S., Petrović, M., Radojević, V.,& Pergal, M.. (2023). Optimization of reaction parameters for preparation  of MXene-based polymer nanocomposites. in 10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June 2023, East Sarajevo, Bosnia and Herzegovina
Institute of Electrical and Electronics Engineers (IEEE)., 23488337.
https://doi.org/10.1109/IcETRAN59631.2023.10192211

Pešić I, Rašljić-Rafajilović M, Vasiljević-Radović D, Ostojić S, Petrović M, Radojević V, Pergal M. Optimization of reaction parameters for preparation  of MXene-based polymer nanocomposites. in 10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June 2023, East Sarajevo, Bosnia and Herzegovina. 2023;:23488337.
doi:10.1109/IcETRAN59631.2023.10192211 .

Pešić, Ivan, Rašljić-Rafajilović, Milena, Vasiljević-Radović, Dana, Ostojić, Sanja, Petrović, Miloš, Radojević, Vesna, Pergal, Marija, "Optimization of reaction parameters for preparation  of MXene-based polymer nanocomposites" in 10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June 2023, East Sarajevo, Bosnia and Herzegovina (2023):23488337,
https://doi.org/10.1109/IcETRAN59631.2023.10192211 . .

TY  - CONF
AU  - Pešić, Ivan
AU  - Ostojić, Sanja
AU  - Vasiljević-Radović, Dana
AU  - Petrović, Miloš
AU  - Radojević, Vesna
AU  - Pergal, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6943
AB  - MXenes are a relatively new class of 2D nanomaterials with promising properties. The 
functional groups on the surface of the nanosheets play a vital role in interacting with other 
materials, especially in nanocomposites. Biocompatibility, admirable mechanical properties, 
and thermal stability are the most significant properties of poly(dimethylsiloxane)-based 
polyurethanes (PU). They are highly convenient for applications in electronic devices and 
implants. In this study, the MXene content was 1 wt. % for two series and 0.5 wt. % for the 
other two series, while the soft segment content was 50 wt. % for all the series. The 
nanocomposites were obtained using an in-situ polymerization method. The timing of adding 
the MXene nanoparticles to the reaction mixture was also varied to examine the changes in 
the physico-mechanical properties of the nanocomposites. Differential scanning calorimetry 
(DSC), scanning electron microscopy (SEM), and tensile tests were conducted to analyze the 
properties of the resulting materials. The glass transition temperature is highest for the series 
in which MXenes are added in the first phase of polyaddition after the solvation of MDI, 
while the series with 0.5 wt.% MXene added later into the reaction exhibit two transitions. 
SEM images revealed uneven distribution and agglomeration of MXene nanoflakes when 
added into the siloxane prepolymer. The tensile test indicated that the series with 0.5 wt. % 
nanoflakes have significantly lower Young's modulus and tensile strength. The distribution of 
nanoparticles and surface morphology are strongly influenced by the timing of adding the 
MXene dispersion into the reaction mixture, as well as the nanoparticle content.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites
SP  - 66
EP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_cer_6943
ER  - 

@conference{
author = "Pešić, Ivan and Ostojić, Sanja and Vasiljević-Radović, Dana and Petrović, Miloš and Radojević, Vesna and Pergal, Marija",
year = "2023",
abstract = "MXenes are a relatively new class of 2D nanomaterials with promising properties. The 
functional groups on the surface of the nanosheets play a vital role in interacting with other 
materials, especially in nanocomposites. Biocompatibility, admirable mechanical properties, 
and thermal stability are the most significant properties of poly(dimethylsiloxane)-based 
polyurethanes (PU). They are highly convenient for applications in electronic devices and 
implants. In this study, the MXene content was 1 wt. % for two series and 0.5 wt. % for the 
other two series, while the soft segment content was 50 wt. % for all the series. The 
nanocomposites were obtained using an in-situ polymerization method. The timing of adding 
the MXene nanoparticles to the reaction mixture was also varied to examine the changes in 
the physico-mechanical properties of the nanocomposites. Differential scanning calorimetry 
(DSC), scanning electron microscopy (SEM), and tensile tests were conducted to analyze the 
properties of the resulting materials. The glass transition temperature is highest for the series 
in which MXenes are added in the first phase of polyaddition after the solvation of MDI, 
while the series with 0.5 wt.% MXene added later into the reaction exhibit two transitions. 
SEM images revealed uneven distribution and agglomeration of MXene nanoflakes when 
added into the siloxane prepolymer. The tensile test indicated that the series with 0.5 wt. % 
nanoflakes have significantly lower Young's modulus and tensile strength. The distribution of 
nanoparticles and surface morphology are strongly influenced by the timing of adding the 
MXene dispersion into the reaction mixture, as well as the nanoparticle content.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites",
pages = "66-66",
url = "https://hdl.handle.net/21.15107/rcub_cer_6943"
}

Pešić, I., Ostojić, S., Vasiljević-Radović, D., Petrović, M., Radojević, V.,& Pergal, M.. (2023). Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 66-66.
https://hdl.handle.net/21.15107/rcub_cer_6943

Pešić I, Ostojić S, Vasiljević-Radović D, Petrović M, Radojević V, Pergal M. Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:66-66.
https://hdl.handle.net/21.15107/rcub_cer_6943 .

Pešić, Ivan, Ostojić, Sanja, Vasiljević-Radović, Dana, Petrović, Miloš, Radojević, Vesna, Pergal, Marija, "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):66-66,
https://hdl.handle.net/21.15107/rcub_cer_6943 .

TY  - CONF
AU  - Pešić, Ivan
AU  - Ostojić, Sanja
AU  - Vasiljević-Radović, Dana
AU  - Petrović, Miloš
AU  - Radojević, Vesna
AU  - Pergal, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6944
AB  - MXenes are a relatively new class of 2D nanomaterials with promising properties. The functional groups on the surface of the nanosheets play a vital role in interacting with other materials, especially in nanocomposites. Biocompatibility, admirable mechanical properties, and thermal stability are the most significant properties of poly(dimethylsiloxane)-based polyurethanes (PU). They are highly convenient for applications in electronic devices and implants. In this study, the MXene content was 1 wt. % for two series and 0.5 wt. % for the other two series, while the soft segment content was 50 wt. % for all the series. The nanocomposites were obtained using an in-situ polymerization method. The timing of adding the MXene nanoparticles to the reaction mixture was also varied to examine the changes in the physico-mechanical properties of the nanocomposites. Differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and tensile tests were conducted to analyze the properties of the resulting materials. The glass transition temperature is highest for the series in which MXenes are added in the first phase of polyaddition after the solvation of MDI, while the series with 0.5 wt.% MXene added later into the reaction exhibit two transitions. SEM images revealed uneven distribution and agglomeration of MXene nanoflakes when added into the siloxane prepolymer. The tensile test indicated that the series with 0.5 wt. % nanoflakes have significantly lower Young's modulus and tensile strength. The distribution of nanoparticles and surface morphology are strongly influenced by the timing of adding the MXene dispersion into the reaction mixture, as well as the nanoparticle content.
T1  - Poster: "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites"
UR  - https://hdl.handle.net/21.15107/rcub_cer_6944
ER  - 

@conference{
author = "Pešić, Ivan and Ostojić, Sanja and Vasiljević-Radović, Dana and Petrović, Miloš and Radojević, Vesna and Pergal, Marija",
year = "2023",
abstract = "MXenes are a relatively new class of 2D nanomaterials with promising properties. The functional groups on the surface of the nanosheets play a vital role in interacting with other materials, especially in nanocomposites. Biocompatibility, admirable mechanical properties, and thermal stability are the most significant properties of poly(dimethylsiloxane)-based polyurethanes (PU). They are highly convenient for applications in electronic devices and implants. In this study, the MXene content was 1 wt. % for two series and 0.5 wt. % for the other two series, while the soft segment content was 50 wt. % for all the series. The nanocomposites were obtained using an in-situ polymerization method. The timing of adding the MXene nanoparticles to the reaction mixture was also varied to examine the changes in the physico-mechanical properties of the nanocomposites. Differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and tensile tests were conducted to analyze the properties of the resulting materials. The glass transition temperature is highest for the series in which MXenes are added in the first phase of polyaddition after the solvation of MDI, while the series with 0.5 wt.% MXene added later into the reaction exhibit two transitions. SEM images revealed uneven distribution and agglomeration of MXene nanoflakes when added into the siloxane prepolymer. The tensile test indicated that the series with 0.5 wt. % nanoflakes have significantly lower Young's modulus and tensile strength. The distribution of nanoparticles and surface morphology are strongly influenced by the timing of adding the MXene dispersion into the reaction mixture, as well as the nanoparticle content.",
title = "Poster: "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites"",
url = "https://hdl.handle.net/21.15107/rcub_cer_6944"
}

Pešić, I., Ostojić, S., Vasiljević-Radović, D., Petrović, M., Radojević, V.,& Pergal, M.. (2023). Poster: "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites". .
https://hdl.handle.net/21.15107/rcub_cer_6944

Pešić I, Ostojić S, Vasiljević-Radović D, Petrović M, Radojević V, Pergal M. Poster: "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites". 2023;.
https://hdl.handle.net/21.15107/rcub_cer_6944 .

Pešić, Ivan, Ostojić, Sanja, Vasiljević-Radović, Dana, Petrović, Miloš, Radojević, Vesna, Pergal, Marija, "Poster: "Impact of synthesis parameters on the properties of polymer/MXene  nanocomposites"" (2023),
https://hdl.handle.net/21.15107/rcub_cer_6944 .

TY  - JOUR
AU  - Mladenović, Ivana O.
AU  - Vuksanović, Marija M.
AU  - Dimitrijević, Stevan P.
AU  - Vasilić, Rastko
AU  - Radojević, Vesna J.
AU  - Vasiljević-Radović, Dana G.
AU  - Nikolić, Nebojša D.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7108
AB  - Copper from sulfate baths without and with added inorganic pigment particles based on strontium aluminate doped with europium and dysprosium (SrAl2O4: Eu2+, Dy3+) was electrodeposited on a brass cathode by a galvanostatic regime. Morphological, structural, and roughness analysis of the pigment particles, the pure (pigment-free) Cu coating, and the Cu coatings with incorporated pigment particles were performed using SEM, XRD, and AFM techniques, respectively. Hardness and creep resistance were considered for the examination of the mechanical properties of the Cu coatings, applying Chicot–Lesage (for hardness) and Sargent–Ashby (for creep resistance) mathematical models. The wettability of the Cu coatings was examined by the static sessile drop method by a measurement of the water contact angle. The incorporation of pigment particles in the Cu deposits did not significantly affect the morphology or texture of the coatings, while the roughness of the deposits rose with the rise in pigment particle concentrations. The hardness of the Cu coatings also increased with the increasing concentration of pigments and was greater than that obtained for the pigment-free Cu coating. The presence of the pigments caused a change in the wettability of the Cu coatings from hydrophilic (for the pigment-free Cu coating) to hydrophobic (for Cu coatings with incorporated particles) surface areas.
PB  - MDPI
T2  - Metals
T1  - Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles
VL  - 13
IS  - 12
SP  - 1979
DO  - 10.3390/met13121979
ER  - 

@article{
author = "Mladenović, Ivana O. and Vuksanović, Marija M. and Dimitrijević, Stevan P. and Vasilić, Rastko and Radojević, Vesna J. and Vasiljević-Radović, Dana G. and Nikolić, Nebojša D.",
year = "2023",
abstract = "Copper from sulfate baths without and with added inorganic pigment particles based on strontium aluminate doped with europium and dysprosium (SrAl2O4: Eu2+, Dy3+) was electrodeposited on a brass cathode by a galvanostatic regime. Morphological, structural, and roughness analysis of the pigment particles, the pure (pigment-free) Cu coating, and the Cu coatings with incorporated pigment particles were performed using SEM, XRD, and AFM techniques, respectively. Hardness and creep resistance were considered for the examination of the mechanical properties of the Cu coatings, applying Chicot–Lesage (for hardness) and Sargent–Ashby (for creep resistance) mathematical models. The wettability of the Cu coatings was examined by the static sessile drop method by a measurement of the water contact angle. The incorporation of pigment particles in the Cu deposits did not significantly affect the morphology or texture of the coatings, while the roughness of the deposits rose with the rise in pigment particle concentrations. The hardness of the Cu coatings also increased with the increasing concentration of pigments and was greater than that obtained for the pigment-free Cu coating. The presence of the pigments caused a change in the wettability of the Cu coatings from hydrophilic (for the pigment-free Cu coating) to hydrophobic (for Cu coatings with incorporated particles) surface areas.",
publisher = "MDPI",
journal = "Metals",
title = "Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles",
volume = "13",
number = "12",
pages = "1979",
doi = "10.3390/met13121979"
}

Mladenović, I. O., Vuksanović, M. M., Dimitrijević, S. P., Vasilić, R., Radojević, V. J., Vasiljević-Radović, D. G.,& Nikolić, N. D.. (2023). Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles. in Metals
MDPI., 13(12), 1979.
https://doi.org/10.3390/met13121979

Mladenović IO, Vuksanović MM, Dimitrijević SP, Vasilić R, Radojević VJ, Vasiljević-Radović DG, Nikolić ND. Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles. in Metals. 2023;13(12):1979.
doi:10.3390/met13121979 .

Mladenović, Ivana O., Vuksanović, Marija M., Dimitrijević, Stevan P., Vasilić, Rastko, Radojević, Vesna J., Vasiljević-Radović, Dana G., Nikolić, Nebojša D., "Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles" in Metals, 13, no. 12 (2023):1979,
https://doi.org/10.3390/met13121979 . .

TY  - JOUR
AU  - Stajčić, Ivana
AU  - Veljković, Filip
AU  - Petrović, Miloš
AU  - Veličković, Suzana
AU  - Radojević, Vesna
AU  - Vlahović, Branislav
AU  - Stajčić, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7112
AB  - High performance polymers with bio-based modifiers are promising materials in terms of
applications and environmental impact. In this work, raw acacia honey was used as a bio-modifier
for epoxy resin, as a rich source of functional groups. The addition of honey resulted in the formation
of highly stable structures that were observed in scanning electron microscopy images as separate
phases at the fracture surface, which were involved in the toughening of the resin. Structural changes
were investigated, revealing the formation of a new aldehyde carbonyl group. Thermal analysis
confirmed the formation of products that were stable up to 600 ◦C, with a glass transition temperature
of 228 ◦C. An energy-controlled impact test was performed to compare the absorbed impact energy of
bio-modified epoxy containing different amounts of honey with unmodified epoxy resin. The results
showed that bio-modified epoxy resin with 3 wt% of acacia honey could withstand several impacts
with full recovery, while unmodified epoxy resin broke at first impact. The absorbed energy at first
impact was 2.5 times higher for bio-modified epoxy resin than it was for unmodified epoxy resin.
In this manner, by using simple preparation and a raw material that is abundant in nature, a novel
epoxy with high thermal and impact resistance was obtained, opening a path for further research in
this field.
PB  - MDPI
T2  - Polymers
T1  - Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey
VL  - 15
IS  - 10
SP  - 2261
DO  - 10.3390/polym15102261
ER  - 

@article{
author = "Stajčić, Ivana and Veljković, Filip and Petrović, Miloš and Veličković, Suzana and Radojević, Vesna and Vlahović, Branislav and Stajčić, Aleksandar",
year = "2023",
abstract = "High performance polymers with bio-based modifiers are promising materials in terms of
applications and environmental impact. In this work, raw acacia honey was used as a bio-modifier
for epoxy resin, as a rich source of functional groups. The addition of honey resulted in the formation
of highly stable structures that were observed in scanning electron microscopy images as separate
phases at the fracture surface, which were involved in the toughening of the resin. Structural changes
were investigated, revealing the formation of a new aldehyde carbonyl group. Thermal analysis
confirmed the formation of products that were stable up to 600 ◦C, with a glass transition temperature
of 228 ◦C. An energy-controlled impact test was performed to compare the absorbed impact energy of
bio-modified epoxy containing different amounts of honey with unmodified epoxy resin. The results
showed that bio-modified epoxy resin with 3 wt% of acacia honey could withstand several impacts
with full recovery, while unmodified epoxy resin broke at first impact. The absorbed energy at first
impact was 2.5 times higher for bio-modified epoxy resin than it was for unmodified epoxy resin.
In this manner, by using simple preparation and a raw material that is abundant in nature, a novel
epoxy with high thermal and impact resistance was obtained, opening a path for further research in
this field.",
publisher = "MDPI",
journal = "Polymers",
title = "Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey",
volume = "15",
number = "10",
pages = "2261",
doi = "10.3390/polym15102261"
}

Stajčić, I., Veljković, F., Petrović, M., Veličković, S., Radojević, V., Vlahović, B.,& Stajčić, A.. (2023). Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey. in Polymers
MDPI., 15(10), 2261.
https://doi.org/10.3390/polym15102261

Stajčić I, Veljković F, Petrović M, Veličković S, Radojević V, Vlahović B, Stajčić A. Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey. in Polymers. 2023;15(10):2261.
doi:10.3390/polym15102261 .

Stajčić, Ivana, Veljković, Filip, Petrović, Miloš, Veličković, Suzana, Radojević, Vesna, Vlahović, Branislav, Stajčić, Aleksandar, "Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey" in Polymers, 15, no. 10 (2023):2261,
https://doi.org/10.3390/polym15102261 . .

TY  - CONF
AU  - Nikolić, Nebojša D.
AU  - Mladenović, Ivana O.
AU  - Lamovec, Jelena S.
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna J.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5213
AB  - Influence of various parameters of electrodeposition, such as type of cathode, composition of the electrolyte and thickness of the coating, on morphology, structure and hardness of copper coatings has been investigated.
PB  - Sarajevo : Faculty of Science University of Sarajevo
C3  - Book of Abstracts - 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina
T1  - Morphology, structure and hardness of electrolytically produced copper coatings
SP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_cer_5213
ER  - 

@conference{
author = "Nikolić, Nebojša D. and Mladenović, Ivana O. and Lamovec, Jelena S. and Vasiljević-Radović, Dana and Radojević, Vesna J.",
year = "2022",
abstract = "Influence of various parameters of electrodeposition, such as type of cathode, composition of the electrolyte and thickness of the coating, on morphology, structure and hardness of copper coatings has been investigated.",
publisher = "Sarajevo : Faculty of Science University of Sarajevo",
journal = "Book of Abstracts - 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina",
title = "Morphology, structure and hardness of electrolytically produced copper coatings",
pages = "59",
url = "https://hdl.handle.net/21.15107/rcub_cer_5213"
}

Nikolić, N. D., Mladenović, I. O., Lamovec, J. S., Vasiljević-Radović, D.,& Radojević, V. J.. (2022). Morphology, structure and hardness of electrolytically produced copper coatings. in Book of Abstracts - 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina
Sarajevo : Faculty of Science University of Sarajevo., 59.
https://hdl.handle.net/21.15107/rcub_cer_5213

Nikolić ND, Mladenović IO, Lamovec JS, Vasiljević-Radović D, Radojević VJ. Morphology, structure and hardness of electrolytically produced copper coatings. in Book of Abstracts - 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina. 2022;:59.
https://hdl.handle.net/21.15107/rcub_cer_5213 .

Nikolić, Nebojša D., Mladenović, Ivana O., Lamovec, Jelena S., Vasiljević-Radović, Dana, Radojević, Vesna J., "Morphology, structure and hardness of electrolytically produced copper coatings" in Book of Abstracts - 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina (2022):59,
https://hdl.handle.net/21.15107/rcub_cer_5213 .

TY  - JOUR
AU  - Mladenović, Ivana O.
AU  - Lamovec, Jelena S.
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna J.
AU  - Nikolić, Nebojša D.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5212
AB  - In this study, a novel procedure, based on application of the Chicot–Lesage (C–L) composite hardness model, was proposed for the determination of an absolute hardness of electrolytically produced copper coatings. The Cu coatings were electrodeposited on the Si(111) substrate by the pulsating current (PC) regime with a variation of the following parameters: the pause duration, the current density amplitude and the coating thickness. The topography of produced coatings was characterized by atomic force microscope (AFM), while a hardness of the coatings was examined by Vickers microindentation test. Applying the C–L model, the critical relative indentation depth (RID)c of 0.14 was determined, which is independent of all examined parameters of the PC regime. This RID value separated the area in which the composite hardness of the Cu coating corresponded to its absolute hardness (RID <0.14) from the area in which the application of the C–L model was necessary for a determination of the absolute coating hardness (RID ≥ 0.14). The obtained value was in a good agreement with the value already published in the literature.
AB  - Предложен je нови поступак заснован на примени Chicot–Lesage (C–L) композитног модела тврдоће за одређивање апсолутне тврдоће електролитички добијених превлака бакра. Превлаке бакра су електрохемијски исталожене на силицијуму (111) оријентације режимом пулсирајуће струје варирањем следећих параметара: трајање паузе, амплитудна густина струје и дебљина превлаке. Топографија произведених превлака је окарактерисана микроскопијом атомских сила, док је тврдоћа превлака испитивана Викерсовим тестом утискивања. Применом C–L композитног модела тврдоће, одређена је критична релативна дубина утискивања (RID), од 0,14, која је независна од свих испитиваних параметара режима пулсирајуће струје. Ова вредност раздваја област у којој композитна тврдоћа превлаке може да се изједначи са њеном апсолутном тврдоћом (RID << 0,14) од области у којој је неопходно применити C–L модел за одређивање апсолутне тврдоће превлаке (RID ≥ 0,14). Добијена вредност RID показује добро слагање са вредностима публикованим у литератури.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model
T1  - Одређивање апсолутне тврдоће електролитички добијених превлака бакра применом Chicot-Lesage композитног модела тврдоће
VL  - 87
IS  - 7-8
SP  - 899
EP  - 910
DO  - 10.2298/JSC211014105M
ER  - 

@article{
author = "Mladenović, Ivana O. and Lamovec, Jelena S. and Vasiljević-Radović, Dana and Radojević, Vesna J. and Nikolić, Nebojša D.",
year = "2022",
abstract = "In this study, a novel procedure, based on application of the Chicot–Lesage (C–L) composite hardness model, was proposed for the determination of an absolute hardness of electrolytically produced copper coatings. The Cu coatings were electrodeposited on the Si(111) substrate by the pulsating current (PC) regime with a variation of the following parameters: the pause duration, the current density amplitude and the coating thickness. The topography of produced coatings was characterized by atomic force microscope (AFM), while a hardness of the coatings was examined by Vickers microindentation test. Applying the C–L model, the critical relative indentation depth (RID)c of 0.14 was determined, which is independent of all examined parameters of the PC regime. This RID value separated the area in which the composite hardness of the Cu coating corresponded to its absolute hardness (RID <0.14) from the area in which the application of the C–L model was necessary for a determination of the absolute coating hardness (RID ≥ 0.14). The obtained value was in a good agreement with the value already published in the literature., Предложен je нови поступак заснован на примени Chicot–Lesage (C–L) композитног модела тврдоће за одређивање апсолутне тврдоће електролитички добијених превлака бакра. Превлаке бакра су електрохемијски исталожене на силицијуму (111) оријентације режимом пулсирајуће струје варирањем следећих параметара: трајање паузе, амплитудна густина струје и дебљина превлаке. Топографија произведених превлака је окарактерисана микроскопијом атомских сила, док је тврдоћа превлака испитивана Викерсовим тестом утискивања. Применом C–L композитног модела тврдоће, одређена је критична релативна дубина утискивања (RID), од 0,14, која је независна од свих испитиваних параметара режима пулсирајуће струје. Ова вредност раздваја област у којој композитна тврдоћа превлаке може да се изједначи са њеном апсолутном тврдоћом (RID << 0,14) од области у којој је неопходно применити C–L модел за одређивање апсолутне тврдоће превлаке (RID ≥ 0,14). Добијена вредност RID показује добро слагање са вредностима публикованим у литератури.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model, Одређивање апсолутне тврдоће електролитички добијених превлака бакра применом Chicot-Lesage композитног модела тврдоће",
volume = "87",
number = "7-8",
pages = "899-910",
doi = "10.2298/JSC211014105M"
}

Mladenović, I. O., Lamovec, J. S., Vasiljević-Radović, D., Radojević, V. J.,& Nikolić, N. D.. (2022). Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 87(7-8), 899-910.
https://doi.org/10.2298/JSC211014105M

Mladenović IO, Lamovec JS, Vasiljević-Radović D, Radojević VJ, Nikolić ND. Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model. in Journal of the Serbian Chemical Society. 2022;87(7-8):899-910.
doi:10.2298/JSC211014105M .

Mladenović, Ivana O., Lamovec, Jelena S., Vasiljević-Radović, Dana, Radojević, Vesna J., Nikolić, Nebojša D., "Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model" in Journal of the Serbian Chemical Society, 87, no. 7-8 (2022):899-910,
https://doi.org/10.2298/JSC211014105M . .

TY  - CONF
AU  - Nikolić, Nebojša D.
AU  - Mladenović, Ivana O.
AU  - Lamovec, Jelena S.
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna J.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5214
AB  - Poster presented at: 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina
T1  - Morphology, structure and hardness of electrolytically produced copper coatings
UR  - https://hdl.handle.net/21.15107/rcub_cer_5214
ER  - 

@conference{
author = "Nikolić, Nebojša D. and Mladenović, Ivana O. and Lamovec, Jelena S. and Vasiljević-Radović, Dana and Radojević, Vesna J.",
year = "2022",
abstract = "Poster presented at: 4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina, June, 30th-July, 02nd, Sarajevo, Bosnia and Herzegovina",
title = "Morphology, structure and hardness of electrolytically produced copper coatings",
url = "https://hdl.handle.net/21.15107/rcub_cer_5214"
}

Nikolić, N. D., Mladenović, I. O., Lamovec, J. S., Vasiljević-Radović, D.,& Radojević, V. J.. (2022). Morphology, structure and hardness of electrolytically produced copper coatings. .
https://hdl.handle.net/21.15107/rcub_cer_5214

Nikolić ND, Mladenović IO, Lamovec JS, Vasiljević-Radović D, Radojević VJ. Morphology, structure and hardness of electrolytically produced copper coatings. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_5214 .

Nikolić, Nebojša D., Mladenović, Ivana O., Lamovec, Jelena S., Vasiljević-Radović, Dana, Radojević, Vesna J., "Morphology, structure and hardness of electrolytically produced copper coatings" (2022),
https://hdl.handle.net/21.15107/rcub_cer_5214 .

TY  - CONF
AU  - Mladenović, Ivana O.
AU  - Nikolić, Nebojša D.
AU  - Vasiljević-Radović, Dana
AU  - Jaćimovski, Stevo
AU  - Sarajlić, Milija
AU  - Radojević, Vesna J.
AU  - Lamovec, Jelena S.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5217
AB  - In this study, a basic sulfate electrolyte for electrochemical copper deposition and a sulfate electrolyte with additives to improve coating quality were used. It has been shown that for the visualization of latent fingerprints, it is better to use an electrolyte without additives. The use of electrolytes with additives has not been shown to be adequate for these purposes due to the effect of filling fingerprint ridges and reducing contrast.
PB  - Niš, Serbia : RAD Centre
C3  - Book of Abstracts - International Conference on Radiation in various fields of research (RAD 10), Herceg Novi, Montenegro, June 2022
T1  - Application of copper electrodeposition processes in visualization of latent fingerprints obtained on various substrates
SP  - 58
DO  - 10.21175/rad.spr.abstr.book.2022.16.2
ER  - 

@conference{
author = "Mladenović, Ivana O. and Nikolić, Nebojša D. and Vasiljević-Radović, Dana and Jaćimovski, Stevo and Sarajlić, Milija and Radojević, Vesna J. and Lamovec, Jelena S.",
year = "2022",
abstract = "In this study, a basic sulfate electrolyte for electrochemical copper deposition and a sulfate electrolyte with additives to improve coating quality were used. It has been shown that for the visualization of latent fingerprints, it is better to use an electrolyte without additives. The use of electrolytes with additives has not been shown to be adequate for these purposes due to the effect of filling fingerprint ridges and reducing contrast.",
publisher = "Niš, Serbia : RAD Centre",
journal = "Book of Abstracts - International Conference on Radiation in various fields of research (RAD 10), Herceg Novi, Montenegro, June 2022",
title = "Application of copper electrodeposition processes in visualization of latent fingerprints obtained on various substrates",
pages = "58",
doi = "10.21175/rad.spr.abstr.book.2022.16.2"
}

Mladenović, I. O., Nikolić, N. D., Vasiljević-Radović, D., Jaćimovski, S., Sarajlić, M., Radojević, V. J.,& Lamovec, J. S.. (2022). Application of copper electrodeposition processes in visualization of latent fingerprints obtained on various substrates. in Book of Abstracts - International Conference on Radiation in various fields of research (RAD 10), Herceg Novi, Montenegro, June 2022
Niš, Serbia : RAD Centre., 58.
https://doi.org/10.21175/rad.spr.abstr.book.2022.16.2

Mladenović IO, Nikolić ND, Vasiljević-Radović D, Jaćimovski S, Sarajlić M, Radojević VJ, Lamovec JS. Application of copper electrodeposition processes in visualization of latent fingerprints obtained on various substrates. in Book of Abstracts - International Conference on Radiation in various fields of research (RAD 10), Herceg Novi, Montenegro, June 2022. 2022;:58.
doi:10.21175/rad.spr.abstr.book.2022.16.2 .

Mladenović, Ivana O., Nikolić, Nebojša D., Vasiljević-Radović, Dana, Jaćimovski, Stevo, Sarajlić, Milija, Radojević, Vesna J., Lamovec, Jelena S., "Application of copper electrodeposition processes in visualization of latent fingerprints obtained on various substrates" in Book of Abstracts - International Conference on Radiation in various fields of research (RAD 10), Herceg Novi, Montenegro, June 2022 (2022):58,
https://doi.org/10.21175/rad.spr.abstr.book.2022.16.2 . .

TY  - CONF
AU  - Mladenović, Ivana O.
AU  - Lamovec, Jelena S.
AU  - Obradov, Marko
AU  - Rašljić Rafajilović, Milena
AU  - Radojević, Vesna J.
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, Nebojša D.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5218
AB  - In this investigation, nickel coatings were electrodeposited on brass substrate. The effects of 
electrodeposition process parameters such as, current density and deposition time (coatings thickness), on surface morphology and composite hardness values were studied. The 
value of the measured composite hardness by Vickers microindentation technique of the selected “hard film on soft substrate” composite system type depends on the applied indentation loads. For this reason, the microindentation loads are also included in the analysis. According to the experiment plan obtained by Design-Expert software, nickel coating has been produced on the brass cathode using galvanostatic regime (DC) with magnetic stirring of the electrolyte. The nickel 
sulphamate electrolyte with saccharine additive was used for Ni electrodeposition. Then, response surface methodology (RSM) was used to establish an adequate mathematical model. Subsequently, a mathematical model was developed to weight the effects of each input parameters (coating thickness, current density and indentation load) on the output parameter (composite hardness) of electrodeposited nickel coatings on brass substrate. According to the obtained results, the coating thickness and indentation load greatly influenced resulting composite hardness. On the other hand, coating current density primarily influenced microstructure and surface roughness. The topographic modification of the Ni coating surface depending on the post-treatment (mechanical and chemical) after deposition was studied using AFM microscopy.
PB  - Belgrade : ETRAN Society
C3  - Proceedings - IX International Conference on Electrical, Electronic and Computing Engineering (IcETRAN 2022) and LXVI Conference on Electronics, Telecommunication, Computing, Automation and Nuclear Engineering (ETRAN 2022), Novi Pazar, Serbia, June 2022
T1  - Optimization of electrodeposition parameters to improve composite hardness of nickel coatings on brass substrate for varying film thicknesses and applied indentation loads
SP  - 398
EP  - 403
UR  - https://hdl.handle.net/21.15107/rcub_cer_5218
ER  - 

@conference{
author = "Mladenović, Ivana O. and Lamovec, Jelena S. and Obradov, Marko and Rašljić Rafajilović, Milena and Radojević, Vesna J. and Vasiljević-Radović, Dana and Nikolić, Nebojša D.",
year = "2022",
abstract = "In this investigation, nickel coatings were electrodeposited on brass substrate. The effects of 
electrodeposition process parameters such as, current density and deposition time (coatings thickness), on surface morphology and composite hardness values were studied. The 
value of the measured composite hardness by Vickers microindentation technique of the selected “hard film on soft substrate” composite system type depends on the applied indentation loads. For this reason, the microindentation loads are also included in the analysis. According to the experiment plan obtained by Design-Expert software, nickel coating has been produced on the brass cathode using galvanostatic regime (DC) with magnetic stirring of the electrolyte. The nickel 
sulphamate electrolyte with saccharine additive was used for Ni electrodeposition. Then, response surface methodology (RSM) was used to establish an adequate mathematical model. Subsequently, a mathematical model was developed to weight the effects of each input parameters (coating thickness, current density and indentation load) on the output parameter (composite hardness) of electrodeposited nickel coatings on brass substrate. According to the obtained results, the coating thickness and indentation load greatly influenced resulting composite hardness. On the other hand, coating current density primarily influenced microstructure and surface roughness. The topographic modification of the Ni coating surface depending on the post-treatment (mechanical and chemical) after deposition was studied using AFM microscopy.",
publisher = "Belgrade : ETRAN Society",
journal = "Proceedings - IX International Conference on Electrical, Electronic and Computing Engineering (IcETRAN 2022) and LXVI Conference on Electronics, Telecommunication, Computing, Automation and Nuclear Engineering (ETRAN 2022), Novi Pazar, Serbia, June 2022",
title = "Optimization of electrodeposition parameters to improve composite hardness of nickel coatings on brass substrate for varying film thicknesses and applied indentation loads",
pages = "398-403",
url = "https://hdl.handle.net/21.15107/rcub_cer_5218"
}

Mladenović, I. O., Lamovec, J. S., Obradov, M., Rašljić Rafajilović, M., Radojević, V. J., Vasiljević-Radović, D.,& Nikolić, N. D.. (2022). Optimization of electrodeposition parameters to improve composite hardness of nickel coatings on brass substrate for varying film thicknesses and applied indentation loads. in Proceedings - IX International Conference on Electrical, Electronic and Computing Engineering (IcETRAN 2022) and LXVI Conference on Electronics, Telecommunication, Computing, Automation and Nuclear Engineering (ETRAN 2022), Novi Pazar, Serbia, June 2022
Belgrade : ETRAN Society., 398-403.
https://hdl.handle.net/21.15107/rcub_cer_5218

Mladenović IO, Lamovec JS, Obradov M, Rašljić Rafajilović M, Radojević VJ, Vasiljević-Radović D, Nikolić ND. Optimization of electrodeposition parameters to improve composite hardness of nickel coatings on brass substrate for varying film thicknesses and applied indentation loads. in Proceedings - IX International Conference on Electrical, Electronic and Computing Engineering (IcETRAN 2022) and LXVI Conference on Electronics, Telecommunication, Computing, Automation and Nuclear Engineering (ETRAN 2022), Novi Pazar, Serbia, June 2022. 2022;:398-403.
https://hdl.handle.net/21.15107/rcub_cer_5218 .

Mladenović, Ivana O., Lamovec, Jelena S., Obradov, Marko, Rašljić Rafajilović, Milena, Radojević, Vesna J., Vasiljević-Radović, Dana, Nikolić, Nebojša D., "Optimization of electrodeposition parameters to improve composite hardness of nickel coatings on brass substrate for varying film thicknesses and applied indentation loads" in Proceedings - IX International Conference on Electrical, Electronic and Computing Engineering (IcETRAN 2022) and LXVI Conference on Electronics, Telecommunication, Computing, Automation and Nuclear Engineering (ETRAN 2022), Novi Pazar, Serbia, June 2022 (2022):398-403,
https://hdl.handle.net/21.15107/rcub_cer_5218 .

TY  - CONF
AU  - Mladenović, Ivana O.
AU  - Nikolić, Nebojša D.
AU  - Lamovec, Jelena S.
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna J.
PY  - 2022
UR  - https://elmina.tmf.bg.ac.rs/index.php/book-of-abstracts
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5227
AB  - This research focuses on the synthesis and characterization of composite coatings via electrochemical route with co-deposition pigments. For that reason, the effect of adding yellow green phosphorescent pigment on microstructural evaluation of the Cu/pigment composite systems has been investigated.
PB  - Belgrade : Serbian Academy of Sciences and Arts
PB  - Belgrade : Faculty of Technology and Metallurgy, University of Belgrade
C3  - Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022
T1  - Effect of concentration pigment particles on microstructure of the metal matrix copper composite coatings
SP  - 158
EP  - 159
UR  - https://hdl.handle.net/21.15107/rcub_cer_5227
ER  - 

@conference{
author = "Mladenović, Ivana O. and Nikolić, Nebojša D. and Lamovec, Jelena S. and Vasiljević-Radović, Dana and Radojević, Vesna J.",
year = "2022",
abstract = "This research focuses on the synthesis and characterization of composite coatings via electrochemical route with co-deposition pigments. For that reason, the effect of adding yellow green phosphorescent pigment on microstructural evaluation of the Cu/pigment composite systems has been investigated.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts, Belgrade : Faculty of Technology and Metallurgy, University of Belgrade",
journal = "Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022",
title = "Effect of concentration pigment particles on microstructure of the metal matrix copper composite coatings",
pages = "158-159",
url = "https://hdl.handle.net/21.15107/rcub_cer_5227"
}

Mladenović, I. O., Nikolić, N. D., Lamovec, J. S., Vasiljević-Radović, D.,& Radojević, V. J.. (2022). Effect of concentration pigment particles on microstructure of the metal matrix copper composite coatings. in Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022
Belgrade : Serbian Academy of Sciences and Arts., 158-159.
https://hdl.handle.net/21.15107/rcub_cer_5227

Mladenović IO, Nikolić ND, Lamovec JS, Vasiljević-Radović D, Radojević VJ. Effect of concentration pigment particles on microstructure of the metal matrix copper composite coatings. in Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022. 2022;:158-159.
https://hdl.handle.net/21.15107/rcub_cer_5227 .

Mladenović, Ivana O., Nikolić, Nebojša D., Lamovec, Jelena S., Vasiljević-Radović, Dana, Radojević, Vesna J., "Effect of concentration pigment particles on microstructure of the metal matrix copper composite coatings" in Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022 (2022):158-159,
https://hdl.handle.net/21.15107/rcub_cer_5227 .

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Mladenović, Ivana O.
AU  - Tomić, Nataša Z.
AU  - Petrović, Miloš
AU  - Radojević, Vesna J.
AU  - Marinković, Aleksandar D.
AU  - Jančić  Heinemann, Radmila
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5266
AB  - Rice husk was used to produce silica particles, which were then used to reinforce the polymer matrix. The synthesized SiO2 particles were characterized using X-ray diffraction, Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy with EDS. In a PMMA matrix, prepared SiO2 particles in amounts of 1, 3, and 5 wt.% were used as reinforcing agents. The goal of this research was to see if SiO2 particles had any effect on the mechanical properties of polymer composite materials. The morphology of the composites was examined using a field emission scanning electron microscope (FE-SEM). Vickers microindentation hardness and impact testing were used to determine the mechanical properties of the obtained composites. The indentation creep’s behavior of a polymethylmetacrylate (PMMA) composite material with varying amounts of nanoparticles (SiO2) was investigated and analyzed.
T2  - Science of Sintering
T1  - Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material
VL  - 54
IS  - 2
SP  - 211
EP  - 221
DO  - 10.2298/SOS2202211V
ER  - 

@article{
author = "Vuksanović, Marija M. and Mladenović, Ivana O. and Tomić, Nataša Z. and Petrović, Miloš and Radojević, Vesna J. and Marinković, Aleksandar D. and Jančić  Heinemann, Radmila",
year = "2022",
abstract = "Rice husk was used to produce silica particles, which were then used to reinforce the polymer matrix. The synthesized SiO2 particles were characterized using X-ray diffraction, Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy with EDS. In a PMMA matrix, prepared SiO2 particles in amounts of 1, 3, and 5 wt.% were used as reinforcing agents. The goal of this research was to see if SiO2 particles had any effect on the mechanical properties of polymer composite materials. The morphology of the composites was examined using a field emission scanning electron microscope (FE-SEM). Vickers microindentation hardness and impact testing were used to determine the mechanical properties of the obtained composites. The indentation creep’s behavior of a polymethylmetacrylate (PMMA) composite material with varying amounts of nanoparticles (SiO2) was investigated and analyzed.",
journal = "Science of Sintering",
title = "Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material",
volume = "54",
number = "2",
pages = "211-221",
doi = "10.2298/SOS2202211V"
}

Vuksanović, M. M., Mladenović, I. O., Tomić, N. Z., Petrović, M., Radojević, V. J., Marinković, A. D.,& Jančić  Heinemann, R.. (2022). Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material. in Science of Sintering, 54(2), 211-221.
https://doi.org/10.2298/SOS2202211V

Vuksanović MM, Mladenović IO, Tomić NZ, Petrović M, Radojević VJ, Marinković AD, Jančić  Heinemann R. Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material. in Science of Sintering. 2022;54(2):211-221.
doi:10.2298/SOS2202211V .

Vuksanović, Marija M., Mladenović, Ivana O., Tomić, Nataša Z., Petrović, Miloš, Radojević, Vesna J., Marinković, Aleksandar D., Jančić  Heinemann, Radmila, "Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material" in Science of Sintering, 54, no. 2 (2022):211-221,
https://doi.org/10.2298/SOS2202211V . .

TY  - JOUR
AU  - Mladenović, Ivana O.
AU  - Lamovec, Jelena S.
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna J.
AU  - Nikolić, Nebojša D.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5310
AB  - The influence of various intensities of ultrasound applied for the electrolyte stirring on morphological and mechanical characteristics of electrolytically produced copper coatings has been investigated. The copper coatings produced by the galvanostatic regime of the electrodeposition from the basic sulphate electrolyte and the electrolyte with added levelling/brightening additives at the low temperature were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques (surface morphology and topography, respectively) and by Vickers microindentation (hardness). The roughness of coatings increased with the increasing intensity of ultrasound, indicating that morphology of the coatings worsened with the enhanced application of ultrasonic waves. This is attributed to the strong effect of ultrasound on hydrodynamic conditions in the near-electrode layer, which is manifested by the increase of share of the activation control in the mixed activation-diffusion control of electrodeposition with increasing the intensity of ultrasound. The concept of "effective overpotential" originally proposed to explain a change of surface morphology in the conditions of vigorous hydrogen evolution is also applicable for a change of morphology of Cu coatings under the imposed effect of ultrasonic waves. Hardness analysis of the coatings showed that an intensity of applied ultrasound did not have any significant effect on the hardness, especially for the Cu coatings produced from the basic sulphate electrolyte.
PB  - International Association of Physical Chemists
T2  - Journal of Electrochemical Science and Engineering
T1  - Influence of intensity of ultrasound on morphology and hardness of copper coatings obtained by electrodeposition
VL  - 12
IS  - 4
SP  - 603
EP  - 605
DO  - 10.5599/jese.1290
ER  - 

@article{
author = "Mladenović, Ivana O. and Lamovec, Jelena S. and Vasiljević-Radović, Dana and Radojević, Vesna J. and Nikolić, Nebojša D.",
year = "2022",
abstract = "The influence of various intensities of ultrasound applied for the electrolyte stirring on morphological and mechanical characteristics of electrolytically produced copper coatings has been investigated. The copper coatings produced by the galvanostatic regime of the electrodeposition from the basic sulphate electrolyte and the electrolyte with added levelling/brightening additives at the low temperature were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques (surface morphology and topography, respectively) and by Vickers microindentation (hardness). The roughness of coatings increased with the increasing intensity of ultrasound, indicating that morphology of the coatings worsened with the enhanced application of ultrasonic waves. This is attributed to the strong effect of ultrasound on hydrodynamic conditions in the near-electrode layer, which is manifested by the increase of share of the activation control in the mixed activation-diffusion control of electrodeposition with increasing the intensity of ultrasound. The concept of "effective overpotential" originally proposed to explain a change of surface morphology in the conditions of vigorous hydrogen evolution is also applicable for a change of morphology of Cu coatings under the imposed effect of ultrasonic waves. Hardness analysis of the coatings showed that an intensity of applied ultrasound did not have any significant effect on the hardness, especially for the Cu coatings produced from the basic sulphate electrolyte.",
publisher = "International Association of Physical Chemists",
journal = "Journal of Electrochemical Science and Engineering",
title = "Influence of intensity of ultrasound on morphology and hardness of copper coatings obtained by electrodeposition",
volume = "12",
number = "4",
pages = "603-605",
doi = "10.5599/jese.1290"
}

Mladenović, I. O., Lamovec, J. S., Vasiljević-Radović, D., Radojević, V. J.,& Nikolić, N. D.. (2022). Influence of intensity of ultrasound on morphology and hardness of copper coatings obtained by electrodeposition. in Journal of Electrochemical Science and Engineering
International Association of Physical Chemists., 12(4), 603-605.
https://doi.org/10.5599/jese.1290

Mladenović IO, Lamovec JS, Vasiljević-Radović D, Radojević VJ, Nikolić ND. Influence of intensity of ultrasound on morphology and hardness of copper coatings obtained by electrodeposition. in Journal of Electrochemical Science and Engineering. 2022;12(4):603-605.
doi:10.5599/jese.1290 .

Mladenović, Ivana O., Lamovec, Jelena S., Vasiljević-Radović, Dana, Radojević, Vesna J., Nikolić, Nebojša D., "Influence of intensity of ultrasound on morphology and hardness of copper coatings obtained by electrodeposition" in Journal of Electrochemical Science and Engineering, 12, no. 4 (2022):603-605,
https://doi.org/10.5599/jese.1290 . .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Nikolić, Nebojša D.
AU  - Lamovec, Jelena
AU  - Tanasković, Dragan
AU  - Vorkapić, Miloš
AU  - Radojević, Vesna
AU  - Vasiljević-Radović, Dana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5380
AB  - Composite systems of electrodeposited 10 µm Cu coatings on Cu foils and 30 µm Cu coatings on brass foils were obtained in direct current regimes (DC) from electrolytes without/with additives. Different regimes of stirring electrolytes were investigated: stationary, magnetic, and ultrasonic. Also, multilayered Cu coating was successfully obtained by the electrodeposition with periodic ultrasonic/magnetic stirring of basic sulfate electrolyte. A bending test technique was used to assess the adhesive strength to the cathodes. Vickers indentation test machine was used for measuring composite hardness in the micro-range. The adhesion parameters named “the critical reduced depth” and “critical cycle number” for the Cu coatings proved suitable for assessing the adhesion behavior. Composite hardness models of Korsunsky and Chen-Gao were applied in order to calculate an intrinsic hardness of the coatings and for an assessment of adhesion performance. The corrosion resistance of the Cu coatings was investigated using the “static corrosion test.” A comparative study showed that the Cu coatings produced in ultrasonic agitation regime or in laminate form have better mechanical properties and better corrosion resistance. It has also been shown that Cu coatings synthesized from electrolyte with additives are structurally superior, but a “soft hardening effect” was observed.
PB  - Beograd : Vojnotehnički institut / Belgrade : Military Technical Institute
C3  - 10th international scientific conference on defensive technologies, Belgrade, 13-14, October 2022
T1  - Influence of electrolyte type and agitation regimes on structural- mechanical performance of electrolytically deposited copper coatings on different cathodes
SP  - 398
EP  - 404
UR  - https://hdl.handle.net/21.15107/rcub_cer_5380
ER  - 

@conference{
author = "Mladenović, Ivana and Nikolić, Nebojša D. and Lamovec, Jelena and Tanasković, Dragan and Vorkapić, Miloš and Radojević, Vesna and Vasiljević-Radović, Dana",
year = "2022",
abstract = "Composite systems of electrodeposited 10 µm Cu coatings on Cu foils and 30 µm Cu coatings on brass foils were obtained in direct current regimes (DC) from electrolytes without/with additives. Different regimes of stirring electrolytes were investigated: stationary, magnetic, and ultrasonic. Also, multilayered Cu coating was successfully obtained by the electrodeposition with periodic ultrasonic/magnetic stirring of basic sulfate electrolyte. A bending test technique was used to assess the adhesive strength to the cathodes. Vickers indentation test machine was used for measuring composite hardness in the micro-range. The adhesion parameters named “the critical reduced depth” and “critical cycle number” for the Cu coatings proved suitable for assessing the adhesion behavior. Composite hardness models of Korsunsky and Chen-Gao were applied in order to calculate an intrinsic hardness of the coatings and for an assessment of adhesion performance. The corrosion resistance of the Cu coatings was investigated using the “static corrosion test.” A comparative study showed that the Cu coatings produced in ultrasonic agitation regime or in laminate form have better mechanical properties and better corrosion resistance. It has also been shown that Cu coatings synthesized from electrolyte with additives are structurally superior, but a “soft hardening effect” was observed.",
publisher = "Beograd : Vojnotehnički institut / Belgrade : Military Technical Institute",
journal = "10th international scientific conference on defensive technologies, Belgrade, 13-14, October 2022",
title = "Influence of electrolyte type and agitation regimes on structural- mechanical performance of electrolytically deposited copper coatings on different cathodes",
pages = "398-404",
url = "https://hdl.handle.net/21.15107/rcub_cer_5380"
}

Mladenović, I., Nikolić, N. D., Lamovec, J., Tanasković, D., Vorkapić, M., Radojević, V.,& Vasiljević-Radović, D.. (2022). Influence of electrolyte type and agitation regimes on structural- mechanical performance of electrolytically deposited copper coatings on different cathodes. in 10th international scientific conference on defensive technologies, Belgrade, 13-14, October 2022
Beograd : Vojnotehnički institut / Belgrade : Military Technical Institute., 398-404.
https://hdl.handle.net/21.15107/rcub_cer_5380

Mladenović I, Nikolić ND, Lamovec J, Tanasković D, Vorkapić M, Radojević V, Vasiljević-Radović D. Influence of electrolyte type and agitation regimes on structural- mechanical performance of electrolytically deposited copper coatings on different cathodes. in 10th international scientific conference on defensive technologies, Belgrade, 13-14, October 2022. 2022;:398-404.
https://hdl.handle.net/21.15107/rcub_cer_5380 .

Mladenović, Ivana, Nikolić, Nebojša D., Lamovec, Jelena, Tanasković, Dragan, Vorkapić, Miloš, Radojević, Vesna, Vasiljević-Radović, Dana, "Influence of electrolyte type and agitation regimes on structural- mechanical performance of electrolytically deposited copper coatings on different cathodes" in 10th international scientific conference on defensive technologies, Belgrade, 13-14, October 2022 (2022):398-404,
https://hdl.handle.net/21.15107/rcub_cer_5380 .

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Mladenović, Ivana O.
AU  - Tomić, Nataša Z.
AU  - Petrović, Miloš
AU  - Radojević, Vesna J.
AU  - Marinković, Aleksandar D.
AU  - Jančić- Heinemann, Radmila
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5423
AB  - Rice husk was used to produce silica particles, which were then used to reinforce the polymer matrix. The synthesized SiO2 particles were characterized using X-ray diffraction, Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy with EDS. In a PMMA matrix, prepared SiO2 particles in amounts of 1, 3, and 5 wt.% were used as reinforcing agents. The goal of this research was to see if SiO2 particles had any effect on the mechanical properties of polymer composite materials. The morphology of the composites was examined using a field emission scanning electron microscope (FE-SEM). Vickers microindentation hardness and impact testing were used to determine the mechanical properties of the obtained composites. The indentation creep’s behavior of a polymethylmetacrylate (PMMA) composite material with varying amounts of nanoparticles (SiO2) was investigated and analyzed.
AB  - Љуска пиринча је коришћена за производњу честица силицијум диоксида, које су коришћене за ојачавање полимерне матрице. Синтетизоване честице силицијум диоксида карактерисане су дифракцијом рендгенских зрака, инфрацрвеном спектроскопијом Фуријеове трансформације (ФТИР) и скенирајућом лектронском микроскопом са ЕДС. У матрици полиметил метакриилата, припремљене честицее силицијум диоксида у количинама од 1, 3 и 5 мас. %, коришћене су као ојачање. Циљ овог истраживања био је да се утврди да ли честице силицијум диоксида утичу на механичка својства полимерних композитних материјала. Морфологија композита је испитивана коришћењем поља емисионог скенирајућег електронског микроскопа (ФЕ-СЕМ). За одређивање механичких својстава добијених композита коришћени су Вицкерс микроиндентациони тестови и испитивање на удар. Понашање пузања композитног материјала полиметилметакрилата (ПММА) са различитим количинама наночестица силицијум диоксида је испитано и анализирано.
PB  - Belgrade :  International Institute for the Science of Sintering (IISS)
T2  - Science of sintering
T1  - Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material
VL  - 54
IS  - 2
SP  - 211
EP  - 221
DO  - 10.2298/SOS2202211V
ER  - 

@article{
author = "Vuksanović, Marija M. and Mladenović, Ivana O. and Tomić, Nataša Z. and Petrović, Miloš and Radojević, Vesna J. and Marinković, Aleksandar D. and Jančić- Heinemann, Radmila",
year = "2022",
abstract = "Rice husk was used to produce silica particles, which were then used to reinforce the polymer matrix. The synthesized SiO2 particles were characterized using X-ray diffraction, Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy with EDS. In a PMMA matrix, prepared SiO2 particles in amounts of 1, 3, and 5 wt.% were used as reinforcing agents. The goal of this research was to see if SiO2 particles had any effect on the mechanical properties of polymer composite materials. The morphology of the composites was examined using a field emission scanning electron microscope (FE-SEM). Vickers microindentation hardness and impact testing were used to determine the mechanical properties of the obtained composites. The indentation creep’s behavior of a polymethylmetacrylate (PMMA) composite material with varying amounts of nanoparticles (SiO2) was investigated and analyzed., Љуска пиринча је коришћена за производњу честица силицијум диоксида, које су коришћене за ојачавање полимерне матрице. Синтетизоване честице силицијум диоксида карактерисане су дифракцијом рендгенских зрака, инфрацрвеном спектроскопијом Фуријеове трансформације (ФТИР) и скенирајућом лектронском микроскопом са ЕДС. У матрици полиметил метакриилата, припремљене честицее силицијум диоксида у количинама од 1, 3 и 5 мас. %, коришћене су као ојачање. Циљ овог истраживања био је да се утврди да ли честице силицијум диоксида утичу на механичка својства полимерних композитних материјала. Морфологија композита је испитивана коришћењем поља емисионог скенирајућег електронског микроскопа (ФЕ-СЕМ). За одређивање механичких својстава добијених композита коришћени су Вицкерс микроиндентациони тестови и испитивање на удар. Понашање пузања композитног материјала полиметилметакрилата (ПММА) са различитим количинама наночестица силицијум диоксида је испитано и анализирано.",
publisher = "Belgrade :  International Institute for the Science of Sintering (IISS)",
journal = "Science of sintering",
title = "Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material",
volume = "54",
number = "2",
pages = "211-221",
doi = "10.2298/SOS2202211V"
}

Vuksanović, M. M., Mladenović, I. O., Tomić, N. Z., Petrović, M., Radojević, V. J., Marinković, A. D.,& Jančić- Heinemann, R.. (2022). Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material. in Science of sintering
Belgrade :  International Institute for the Science of Sintering (IISS)., 54(2), 211-221.
https://doi.org/10.2298/SOS2202211V

Vuksanović MM, Mladenović IO, Tomić NZ, Petrović M, Radojević VJ, Marinković AD, Jančić- Heinemann R. Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material. in Science of sintering. 2022;54(2):211-221.
doi:10.2298/SOS2202211V .

Vuksanović, Marija M., Mladenović, Ivana O., Tomić, Nataša Z., Petrović, Miloš, Radojević, Vesna J., Marinković, Aleksandar D., Jančić- Heinemann, Radmila, "Mechanical Properties of Biomass-derived Silica Nanoparticles Reinforced PMMA Composite Material" in Science of sintering, 54, no. 2 (2022):211-221,
https://doi.org/10.2298/SOS2202211V . .

TY  - JOUR
AU  - Stajčić, Ivana
AU  - Stajčić, Aleksandar
AU  - Serpa, Cristina
AU  - Vasiljević-Radović, Dana
AU  - Randjelović, Branislav
AU  - Radojević, Vesna
AU  - Fecht, Hans
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5571
AB  - Polymers and polymer matrix composites are commonly used materials with applications extending from packaging materials to delicate electronic devices. Epoxy resins and fiber-reinforced epoxy-based composites have been used as adhesives and construction parts. Fractal analysis has been recognized in materials science as a valuable tool for the microstructural characterization of composites by connecting fractal characteristics with composites’ functional properties. In this study, fractal reconstructions of different microstructural shapes in an epoxy-based composite were performed on field emission scanning electron microscopy (FESEM) images. These images were of glass fiber reinforced epoxy as well as a hybrid composite containing both glass and electrospun polystyrene fibers in an epoxy matrix. Fractal reconstruction enables the identification of self-similarity in the fractal structure, which represents a novelty in analyzing the fractal properties of materials. Fractal Real Finder software, based on the mathematical affine fractal regression model, was employed to reconstruct different microstructure shapes and calculate fractal dimensions to develop a method of predicting the optimal structure–property relations in composite materials in the future.
PB  - MDPI
T2  - Fractal and Fractional
T1  - Microstructure of Epoxy-Based Composites: Fractal Nature Analysis
VL  - 6
IS  - 12
SP  - 741
DO  - 10.3390/fractalfract6120741
ER  - 

@article{
author = "Stajčić, Ivana and Stajčić, Aleksandar and Serpa, Cristina and Vasiljević-Radović, Dana and Randjelović, Branislav and Radojević, Vesna and Fecht, Hans",
year = "2022",
abstract = "Polymers and polymer matrix composites are commonly used materials with applications extending from packaging materials to delicate electronic devices. Epoxy resins and fiber-reinforced epoxy-based composites have been used as adhesives and construction parts. Fractal analysis has been recognized in materials science as a valuable tool for the microstructural characterization of composites by connecting fractal characteristics with composites’ functional properties. In this study, fractal reconstructions of different microstructural shapes in an epoxy-based composite were performed on field emission scanning electron microscopy (FESEM) images. These images were of glass fiber reinforced epoxy as well as a hybrid composite containing both glass and electrospun polystyrene fibers in an epoxy matrix. Fractal reconstruction enables the identification of self-similarity in the fractal structure, which represents a novelty in analyzing the fractal properties of materials. Fractal Real Finder software, based on the mathematical affine fractal regression model, was employed to reconstruct different microstructure shapes and calculate fractal dimensions to develop a method of predicting the optimal structure–property relations in composite materials in the future.",
publisher = "MDPI",
journal = "Fractal and Fractional",
title = "Microstructure of Epoxy-Based Composites: Fractal Nature Analysis",
volume = "6",
number = "12",
pages = "741",
doi = "10.3390/fractalfract6120741"
}

Stajčić, I., Stajčić, A., Serpa, C., Vasiljević-Radović, D., Randjelović, B., Radojević, V.,& Fecht, H.. (2022). Microstructure of Epoxy-Based Composites: Fractal Nature Analysis. in Fractal and Fractional
MDPI., 6(12), 741.
https://doi.org/10.3390/fractalfract6120741

Stajčić I, Stajčić A, Serpa C, Vasiljević-Radović D, Randjelović B, Radojević V, Fecht H. Microstructure of Epoxy-Based Composites: Fractal Nature Analysis. in Fractal and Fractional. 2022;6(12):741.
doi:10.3390/fractalfract6120741 .

Stajčić, Ivana, Stajčić, Aleksandar, Serpa, Cristina, Vasiljević-Radović, Dana, Randjelović, Branislav, Radojević, Vesna, Fecht, Hans, "Microstructure of Epoxy-Based Composites: Fractal Nature Analysis" in Fractal and Fractional, 6, no. 12 (2022):741,
https://doi.org/10.3390/fractalfract6120741 . .

TY  - CONF
AU  - Mladenović, Ivana O.
AU  - Nikolić, Nebojša D.
AU  - Lamovec, Jelena S.
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6584
AB  - Electrodeposition of Cu was performed on Si(111) by the pulsating current (PC) regime in the
range of the average current densities (jav) between 15 and 70 mA cm-2
. The selected values of the
average current densities were attained by varying either pause duration (tp: 28.3, 15, 7.5 and 5 ms,
i.e. jav: 15, 25, 40 and 50 mA cm-2
for the constant values of deposition pulse of 5 ms and current
density amplitude (jA) of 100 mA cm-2) or amplitude of the current density (jA: 120 and 140 mA cm-2
,
i.e. jav: 60 and 70 mA cm-2
for the constant values of deposition pulse of 5 ms and pause duration of
5 ms). Morphological and structural characteristics of the obtained coatings were examined by
scanning electron microscope (SEM), atomic force microscope (AFM) and X-ray diffraction (XRD),
respectively. With increasing the average current density, morphologes of the coatings changed from
those with large and well defined crystal grains obtained at jav of 15 mA cm-2 (the dominant effect of
activation control) to fine-grained obtained at jav of 50 mA cm-2 (the mixed activation-diffusion
control) and those with globules when diffusion becomes a dominant process (jav = 70 mA cm-2). The
minimum roughness showed the Cu coating obtained at jav of 50 mA cm-2
. Simultaneously, crystal
structure changed from the strong (220) to the strong (111) preferred orientation with increasing
average current density. The change of surface morphology was discussed by the effect of applied
parameters of the PC regime on the type of electrodeposition control, while change in crystal
orientation of produced coatings was explained by various rates of growth on various crystal planes.
Hardness analysis of the produced coatings was performed by application of the Chicot-Lesage (C-L)
composite hardness model. By application of this model, the relative indentation depth (RID; where
RID = h/d; h is an indentation depth, and d is a thickness of coating) of 0.14 was established as the
limiting value separating the area of the absolute hardness of the Cu coatings (RID < 0.14) from the
area in which application of the C-L model is necessary for a determination of the absolute hardness
of coatings (RID > 0.14). For RID < 0.14, the measured composite hardness corresponded to the
absolute hardness of the coating.
PB  - Niš, Serbia : RAD Centre
C3  - Book of abstracts - Ninth international conference on radiation in various fields of research (RAD 2021), 14-18.06.2021, Herceg Novi, Montenegro
T1  - Influence of parameters of the pulsating current (PC) regime on morphological, structural and hardness characteristics of copper coatings electrodeposited on Si(111)
SP  - 98
EP  - 98
DO  - 10.21175/rad.abstr.book.2021.15.14
ER  - 

@conference{
author = "Mladenović, Ivana O. and Nikolić, Nebojša D. and Lamovec, Jelena S. and Vasiljević-Radović, Dana and Radojević, Vesna",
year = "2021",
abstract = "Electrodeposition of Cu was performed on Si(111) by the pulsating current (PC) regime in the
range of the average current densities (jav) between 15 and 70 mA cm-2
. The selected values of the
average current densities were attained by varying either pause duration (tp: 28.3, 15, 7.5 and 5 ms,
i.e. jav: 15, 25, 40 and 50 mA cm-2
for the constant values of deposition pulse of 5 ms and current
density amplitude (jA) of 100 mA cm-2) or amplitude of the current density (jA: 120 and 140 mA cm-2
,
i.e. jav: 60 and 70 mA cm-2
for the constant values of deposition pulse of 5 ms and pause duration of
5 ms). Morphological and structural characteristics of the obtained coatings were examined by
scanning electron microscope (SEM), atomic force microscope (AFM) and X-ray diffraction (XRD),
respectively. With increasing the average current density, morphologes of the coatings changed from
those with large and well defined crystal grains obtained at jav of 15 mA cm-2 (the dominant effect of
activation control) to fine-grained obtained at jav of 50 mA cm-2 (the mixed activation-diffusion
control) and those with globules when diffusion becomes a dominant process (jav = 70 mA cm-2). The
minimum roughness showed the Cu coating obtained at jav of 50 mA cm-2
. Simultaneously, crystal
structure changed from the strong (220) to the strong (111) preferred orientation with increasing
average current density. The change of surface morphology was discussed by the effect of applied
parameters of the PC regime on the type of electrodeposition control, while change in crystal
orientation of produced coatings was explained by various rates of growth on various crystal planes.
Hardness analysis of the produced coatings was performed by application of the Chicot-Lesage (C-L)
composite hardness model. By application of this model, the relative indentation depth (RID; where
RID = h/d; h is an indentation depth, and d is a thickness of coating) of 0.14 was established as the
limiting value separating the area of the absolute hardness of the Cu coatings (RID < 0.14) from the
area in which application of the C-L model is necessary for a determination of the absolute hardness
of coatings (RID > 0.14). For RID < 0.14, the measured composite hardness corresponded to the
absolute hardness of the coating.",
publisher = "Niš, Serbia : RAD Centre",
journal = "Book of abstracts - Ninth international conference on radiation in various fields of research (RAD 2021), 14-18.06.2021, Herceg Novi, Montenegro",
title = "Influence of parameters of the pulsating current (PC) regime on morphological, structural and hardness characteristics of copper coatings electrodeposited on Si(111)",
pages = "98-98",
doi = "10.21175/rad.abstr.book.2021.15.14"
}

Mladenović, I. O., Nikolić, N. D., Lamovec, J. S., Vasiljević-Radović, D.,& Radojević, V.. (2021). Influence of parameters of the pulsating current (PC) regime on morphological, structural and hardness characteristics of copper coatings electrodeposited on Si(111). in Book of abstracts - Ninth international conference on radiation in various fields of research (RAD 2021), 14-18.06.2021, Herceg Novi, Montenegro
Niš, Serbia : RAD Centre., 98-98.
https://doi.org/10.21175/rad.abstr.book.2021.15.14

Mladenović IO, Nikolić ND, Lamovec JS, Vasiljević-Radović D, Radojević V. Influence of parameters of the pulsating current (PC) regime on morphological, structural and hardness characteristics of copper coatings electrodeposited on Si(111). in Book of abstracts - Ninth international conference on radiation in various fields of research (RAD 2021), 14-18.06.2021, Herceg Novi, Montenegro. 2021;:98-98.
doi:10.21175/rad.abstr.book.2021.15.14 .

Mladenović, Ivana O., Nikolić, Nebojša D., Lamovec, Jelena S., Vasiljević-Radović, Dana, Radojević, Vesna, "Influence of parameters of the pulsating current (PC) regime on morphological, structural and hardness characteristics of copper coatings electrodeposited on Si(111)" in Book of abstracts - Ninth international conference on radiation in various fields of research (RAD 2021), 14-18.06.2021, Herceg Novi, Montenegro (2021):98-98,
https://doi.org/10.21175/rad.abstr.book.2021.15.14 . .

TY  - JOUR
AU  - Mladenović, Ivana
AU  - Nikolić, Nebojša D.
AU  - Lamovec, Jelena
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4087
AB  - The mechanical characteristics of electrochemically deposited copper coatings have been
examined by application of two hardness composite models: the Chicot-Lesage (C-L) and the Cheng-Gao (C-G) models. The 10, 20, 40 and 60 microns thick fine-grained Cu coatings were electrodeposited on the brass by the regime of pulsating current (PC) at an average current density of 50 mA cm-2, and were characterized by scanning electron (SEM), atomic force (AFM) and optical (OM) microscopes. By application of the C-L model we determined a limiting relative indentation depth (RID) value that separates the area of the coating hardness from that with a strong effect of the substrate on the measured composite hardness. The coating hardness values in the 0.9418–1.1399 GPa range, obtained by the C-G model, confirmed the assumption that the Cu coatings on the brass belongs to the "soft film on hard substrate" composite hardness system. The obtained stress exponents in the 4.35–7.69 range at an applied load of 0.49 N indicated that the dominant creep mechanism is the dislocation creep and the dislocation climb. The obtained mechanical characteristics were compared with those recently obtained on the Si(111) substrate, and the effects of substrate characteristics such as hardness and roughness on the mechanical characteristics of the electrodeposited Cu coatings were discussed and explained.
PB  - MDPI
T2  - Metals
T1  - Application of the Composite Hardness Models in the Analysis of Mechanical Characteristics of Electrolytically Deposited Copper Coatings: The Effect of the Type of Substrate
VL  - 11
IS  - 1
SP  - 111
DO  - 10.3390/met11010111
ER  - 

@article{
author = "Mladenović, Ivana and Nikolić, Nebojša D. and Lamovec, Jelena and Vasiljević-Radović, Dana and Radojević, Vesna",
year = "2021",
abstract = "The mechanical characteristics of electrochemically deposited copper coatings have been
examined by application of two hardness composite models: the Chicot-Lesage (C-L) and the Cheng-Gao (C-G) models. The 10, 20, 40 and 60 microns thick fine-grained Cu coatings were electrodeposited on the brass by the regime of pulsating current (PC) at an average current density of 50 mA cm-2, and were characterized by scanning electron (SEM), atomic force (AFM) and optical (OM) microscopes. By application of the C-L model we determined a limiting relative indentation depth (RID) value that separates the area of the coating hardness from that with a strong effect of the substrate on the measured composite hardness. The coating hardness values in the 0.9418–1.1399 GPa range, obtained by the C-G model, confirmed the assumption that the Cu coatings on the brass belongs to the "soft film on hard substrate" composite hardness system. The obtained stress exponents in the 4.35–7.69 range at an applied load of 0.49 N indicated that the dominant creep mechanism is the dislocation creep and the dislocation climb. The obtained mechanical characteristics were compared with those recently obtained on the Si(111) substrate, and the effects of substrate characteristics such as hardness and roughness on the mechanical characteristics of the electrodeposited Cu coatings were discussed and explained.",
publisher = "MDPI",
journal = "Metals",
title = "Application of the Composite Hardness Models in the Analysis of Mechanical Characteristics of Electrolytically Deposited Copper Coatings: The Effect of the Type of Substrate",
volume = "11",
number = "1",
pages = "111",
doi = "10.3390/met11010111"
}

Mladenović, I., Nikolić, N. D., Lamovec, J., Vasiljević-Radović, D.,& Radojević, V.. (2021). Application of the Composite Hardness Models in the Analysis of Mechanical Characteristics of Electrolytically Deposited Copper Coatings: The Effect of the Type of Substrate. in Metals
MDPI., 11(1), 111.
https://doi.org/10.3390/met11010111

Mladenović I, Nikolić ND, Lamovec J, Vasiljević-Radović D, Radojević V. Application of the Composite Hardness Models in the Analysis of Mechanical Characteristics of Electrolytically Deposited Copper Coatings: The Effect of the Type of Substrate. in Metals. 2021;11(1):111.
doi:10.3390/met11010111 .

Mladenović, Ivana, Nikolić, Nebojša D., Lamovec, Jelena, Vasiljević-Radović, Dana, Radojević, Vesna, "Application of the Composite Hardness Models in the Analysis of Mechanical Characteristics of Electrolytically Deposited Copper Coatings: The Effect of the Type of Substrate" in Metals, 11, no. 1 (2021):111,
https://doi.org/10.3390/met11010111 . .

TY  - JOUR
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Vasiljević-Radović, Dana
AU  - Vasilić, Rastko
AU  - Radojević, Vesna
AU  - Nikolić, Nebojša D.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4840
AB  - The influence of various electrolysis parameters, such as the type of cathode, composition of the electrolyte and electrolysis time, on the morphology, structure and hardness of copper coatings has been investigated. Morphology and structure of the coatings were analyzed by scanning electron microscope (SEM), atomic force microscope (AFM) and X-ray diffraction (XRD), while coating hardness was examined by Vickers microindentation test applying the Chicot–Lesage (C–L) composite hardness model. Depending on the conditions of electrolysis, two types of Cu coatings were obtained: fine-grained mat coatings with a strong (220) preferred orientation from the sulfate electrolyte and smooth mirror bright coatings with a strong (200) preferred orientation from the electrolyte with added leveling/brightening additives. The mat coatings showed larger both measured composite and calculated coating hardness than the mirror bright coatings, that can be explained by the phenomena on boundary among grains. Independent of electrolysis conditions, the critical relative indentation depth (RID) of 0.14 was established for all types of the Cu coatings, separating the zone in which the composite hardness can be equaled with the coating hardness and the zone requiring an application of the C–L model for a determination of the absolute hardness of the Cu coatings.
PB  - MDPI
T2  - Metals
T1  - Implementation of the Chicot–Lesage Composite Hardness Model in a Determination of Absolute Hardness of Copper Coatings Obtained by the Electrodeposition Processes
VL  - 11
IS  - 11
SP  - 1807
DO  - 10.3390/met11111807
ER  - 

@article{
author = "Mladenović, Ivana and Lamovec, Jelena and Vasiljević-Radović, Dana and Vasilić, Rastko and Radojević, Vesna and Nikolić, Nebojša D.",
year = "2021",
abstract = "The influence of various electrolysis parameters, such as the type of cathode, composition of the electrolyte and electrolysis time, on the morphology, structure and hardness of copper coatings has been investigated. Morphology and structure of the coatings were analyzed by scanning electron microscope (SEM), atomic force microscope (AFM) and X-ray diffraction (XRD), while coating hardness was examined by Vickers microindentation test applying the Chicot–Lesage (C–L) composite hardness model. Depending on the conditions of electrolysis, two types of Cu coatings were obtained: fine-grained mat coatings with a strong (220) preferred orientation from the sulfate electrolyte and smooth mirror bright coatings with a strong (200) preferred orientation from the electrolyte with added leveling/brightening additives. The mat coatings showed larger both measured composite and calculated coating hardness than the mirror bright coatings, that can be explained by the phenomena on boundary among grains. Independent of electrolysis conditions, the critical relative indentation depth (RID) of 0.14 was established for all types of the Cu coatings, separating the zone in which the composite hardness can be equaled with the coating hardness and the zone requiring an application of the C–L model for a determination of the absolute hardness of the Cu coatings.",
publisher = "MDPI",
journal = "Metals",
title = "Implementation of the Chicot–Lesage Composite Hardness Model in a Determination of Absolute Hardness of Copper Coatings Obtained by the Electrodeposition Processes",
volume = "11",
number = "11",
pages = "1807",
doi = "10.3390/met11111807"
}

Mladenović, I., Lamovec, J., Vasiljević-Radović, D., Vasilić, R., Radojević, V.,& Nikolić, N. D.. (2021). Implementation of the Chicot–Lesage Composite Hardness Model in a Determination of Absolute Hardness of Copper Coatings Obtained by the Electrodeposition Processes. in Metals
MDPI., 11(11), 1807.
https://doi.org/10.3390/met11111807

Mladenović I, Lamovec J, Vasiljević-Radović D, Vasilić R, Radojević V, Nikolić ND. Implementation of the Chicot–Lesage Composite Hardness Model in a Determination of Absolute Hardness of Copper Coatings Obtained by the Electrodeposition Processes. in Metals. 2021;11(11):1807.
doi:10.3390/met11111807 .

Mladenović, Ivana, Lamovec, Jelena, Vasiljević-Radović, Dana, Vasilić, Rastko, Radojević, Vesna, Nikolić, Nebojša D., "Implementation of the Chicot–Lesage Composite Hardness Model in a Determination of Absolute Hardness of Copper Coatings Obtained by the Electrodeposition Processes" in Metals, 11, no. 11 (2021):1807,
https://doi.org/10.3390/met11111807 . .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Bošković, Marko
AU  - Lamovec, Jelena
AU  - Vuksanović, Marija M.
AU  - Nikolić, Nebojša D.
AU  - Radojević, Vesna
AU  - Vasiljević-Radović, Dana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4841
AB  - Electrochemically deposited copper coatings obtained from sulfate baths on brass substrates in the regime of direct current (DC) with and without an application of ultrasound mixing of electrolytes (DC/US) have been studied. The aim of the research was analysis of the influence of current density, ultrasonic mixing of electrolyte and presence of additives on the electrodeposited coatings, in order to obtain uniform compact coatings suitable for potential application in MEMS devices. Structural, electrical and mechanical behavior of thin copper coatings were investigated using SEM, AFM, four- point probe method and Vickers hardness test.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
C3  - Proceedings - 2021 32nd IEEE International Conference on microelectronics, MIEL 2021
T1  - Structural, Electrical and Mechanical Behavior of Thin Copper Coatings Obtained by Various Electrodeposition Processes
SP  - 165
EP  - 168
DO  - 10.1109/MIEL52794.2021.9569036
ER  - 

@conference{
author = "Mladenović, Ivana and Bošković, Marko and Lamovec, Jelena and Vuksanović, Marija M. and Nikolić, Nebojša D. and Radojević, Vesna and Vasiljević-Radović, Dana",
year = "2021",
abstract = "Electrochemically deposited copper coatings obtained from sulfate baths on brass substrates in the regime of direct current (DC) with and without an application of ultrasound mixing of electrolytes (DC/US) have been studied. The aim of the research was analysis of the influence of current density, ultrasonic mixing of electrolyte and presence of additives on the electrodeposited coatings, in order to obtain uniform compact coatings suitable for potential application in MEMS devices. Structural, electrical and mechanical behavior of thin copper coatings were investigated using SEM, AFM, four- point probe method and Vickers hardness test.",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
journal = "Proceedings - 2021 32nd IEEE International Conference on microelectronics, MIEL 2021",
title = "Structural, Electrical and Mechanical Behavior of Thin Copper Coatings Obtained by Various Electrodeposition Processes",
pages = "165-168",
doi = "10.1109/MIEL52794.2021.9569036"
}

Mladenović, I., Bošković, M., Lamovec, J., Vuksanović, M. M., Nikolić, N. D., Radojević, V.,& Vasiljević-Radović, D.. (2021). Structural, Electrical and Mechanical Behavior of Thin Copper Coatings Obtained by Various Electrodeposition Processes. in Proceedings - 2021 32nd IEEE International Conference on microelectronics, MIEL 2021
Institute of Electrical and Electronics Engineers (IEEE)., 165-168.
https://doi.org/10.1109/MIEL52794.2021.9569036

Mladenović I, Bošković M, Lamovec J, Vuksanović MM, Nikolić ND, Radojević V, Vasiljević-Radović D. Structural, Electrical and Mechanical Behavior of Thin Copper Coatings Obtained by Various Electrodeposition Processes. in Proceedings - 2021 32nd IEEE International Conference on microelectronics, MIEL 2021. 2021;:165-168.
doi:10.1109/MIEL52794.2021.9569036 .

Mladenović, Ivana, Bošković, Marko, Lamovec, Jelena, Vuksanović, Marija M., Nikolić, Nebojša D., Radojević, Vesna, Vasiljević-Radović, Dana, "Structural, Electrical and Mechanical Behavior of Thin Copper Coatings Obtained by Various Electrodeposition Processes" in Proceedings - 2021 32nd IEEE International Conference on microelectronics, MIEL 2021 (2021):165-168,
https://doi.org/10.1109/MIEL52794.2021.9569036 . .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Andrić, Stevan
AU  - Vorkapić, Miloš
AU  - Obradov, Marko
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna
AU  - Nikolić, Nebojša D.
PY  - 2021
UR  - https://www.etran.rs/2021/en/proceedings/
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4922
AB  - Influence of an intensity of ultrasonic mixing of electrolyte in a temperature range of 27–37 °C and ultrasonic power intensity in the range of 3.77–18.84 W/cm2 (10–50 %) on a synthesis of fine-grained copper deposits was examined. Copper coatings were electrodeposited on a brass substrate in direct current (DC) regime with an applied current density of 50 mA·cm-2. The laboratory-made copper sulfate electrolyte was used without or with addition of additives. The variation of temperature under sonoelectrodeposition process and variation mixing intensity of electrolyte were ensured by using an ultrasonic probe. The produced Cu coatings were examined by optical microscope (OM) in order to observe the microstructural modification with variation ultrasonic parameters and for measuring imprints of Vickers indenter. The micro hardness properties of composite systems were characterized using Vickers micro indentation test. The composite hardness models Chicot-Lesage and Chen-Gao were used for the determination the coatings hardness and adhesion evaluation. Application of Atomic Force Microscopy (AFM) technique also confirmed the strong influence of ultrasonic mixing conditions of electrolyte onto change of the microstructure of copper deposits and surface roughness of the coatings. The maximum hardness, good adhesion properties and minimum micro surface roughness was obtained for the fine-grained Cu coating produced with amplitude of 50 % ultrasonic mixing of electrolyte without additives and 30 % for electrolyte with additives.
PB  - Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering
C3  - Proceedings - 8th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2021 and 65th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020
T1  - Synthesis and characterization of thin copper coatings obtained by sonoelectrodeposition method
SP  - MOI 1.1
UR  - https://hdl.handle.net/21.15107/rcub_cer_4922
ER  - 

@conference{
author = "Mladenović, Ivana and Lamovec, Jelena and Andrić, Stevan and Vorkapić, Miloš and Obradov, Marko and Vasiljević-Radović, Dana and Radojević, Vesna and Nikolić, Nebojša D.",
year = "2021",
abstract = "Influence of an intensity of ultrasonic mixing of electrolyte in a temperature range of 27–37 °C and ultrasonic power intensity in the range of 3.77–18.84 W/cm2 (10–50 %) on a synthesis of fine-grained copper deposits was examined. Copper coatings were electrodeposited on a brass substrate in direct current (DC) regime with an applied current density of 50 mA·cm-2. The laboratory-made copper sulfate electrolyte was used without or with addition of additives. The variation of temperature under sonoelectrodeposition process and variation mixing intensity of electrolyte were ensured by using an ultrasonic probe. The produced Cu coatings were examined by optical microscope (OM) in order to observe the microstructural modification with variation ultrasonic parameters and for measuring imprints of Vickers indenter. The micro hardness properties of composite systems were characterized using Vickers micro indentation test. The composite hardness models Chicot-Lesage and Chen-Gao were used for the determination the coatings hardness and adhesion evaluation. Application of Atomic Force Microscopy (AFM) technique also confirmed the strong influence of ultrasonic mixing conditions of electrolyte onto change of the microstructure of copper deposits and surface roughness of the coatings. The maximum hardness, good adhesion properties and minimum micro surface roughness was obtained for the fine-grained Cu coating produced with amplitude of 50 % ultrasonic mixing of electrolyte without additives and 30 % for electrolyte with additives.",
publisher = "Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering",
journal = "Proceedings - 8th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2021 and 65th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020",
title = "Synthesis and characterization of thin copper coatings obtained by sonoelectrodeposition method",
pages = "MOI 1.1",
url = "https://hdl.handle.net/21.15107/rcub_cer_4922"
}

Mladenović, I., Lamovec, J., Andrić, S., Vorkapić, M., Obradov, M., Vasiljević-Radović, D., Radojević, V.,& Nikolić, N. D.. (2021). Synthesis and characterization of thin copper coatings obtained by sonoelectrodeposition method. in Proceedings - 8th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2021 and 65th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020
Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering., MOI 1.1.
https://hdl.handle.net/21.15107/rcub_cer_4922

Mladenović I, Lamovec J, Andrić S, Vorkapić M, Obradov M, Vasiljević-Radović D, Radojević V, Nikolić ND. Synthesis and characterization of thin copper coatings obtained by sonoelectrodeposition method. in Proceedings - 8th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2021 and 65th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020. 2021;:MOI 1.1.
https://hdl.handle.net/21.15107/rcub_cer_4922 .

Mladenović, Ivana, Lamovec, Jelena, Andrić, Stevan, Vorkapić, Miloš, Obradov, Marko, Vasiljević-Radović, Dana, Radojević, Vesna, Nikolić, Nebojša D., "Synthesis and characterization of thin copper coatings obtained by sonoelectrodeposition method" in Proceedings - 8th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2021 and 65th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020 (2021):MOI 1.1,
https://hdl.handle.net/21.15107/rcub_cer_4922 .

TY  - JOUR
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Radisavljević, Andjela
AU  - Veljković, Filip
AU  - Čebela, Maria
AU  - Mitić, Vojislav V.
AU  - Radojević, Vesna
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3676
AB  - Nowadays, there is a very high importance of composite research and variety of their applications in the modern world. In that sense, we researched hollow glass capillaries filled with dissolved Grubbs catalyst (GC) and dicyclopentadiene (DCPD) were incorporated into a fiber-reinforced epoxy with the aim of improving the flow of healing agents to the crack site. The morphological investigation of the crack site was performed using field emission scanning electron microscopy (FESEM), showing the difference between the samples depending on the used solvent. The software analysis of sample photographs has been performed by calculating the fractured/ healed surface area of the samples, revealing that approximately 20% of the volume was affected by the impact. Fourier transform infrared spectroscopy (FTIR) revealed that poly (dicyclopentadiene) (PDCPD) formed at the healed interface. However, the FTIR investigation of catalyst stability in different solvents showed structural changes in GC and partial deactivation. The mechanical tests of the samples showed that a recovery of 60% after 24 h at room temperature could be achieved through the use of a solvent and very low concentration of GC. The performed research results are a good base to develop the model for predicting the processes and morphology, with the goal to design the final mechanical and in the future, thermal, properties in advance. This opens a new direction for future research in the field of composite healing.
PB  - Elsevier
T2  - Materials Chemistry and Physics
T1  - Solvent effects on structural changes in self-healing epoxy composites
VL  - 256
SP  - 123761
DO  - 10.1016/j.matchemphys.2020.123761
ER  - 

@article{
author = "Radović, Ivana and Stajčić, Aleksandar and Radisavljević, Andjela and Veljković, Filip and Čebela, Maria and Mitić, Vojislav V. and Radojević, Vesna",
year = "2020",
abstract = "Nowadays, there is a very high importance of composite research and variety of their applications in the modern world. In that sense, we researched hollow glass capillaries filled with dissolved Grubbs catalyst (GC) and dicyclopentadiene (DCPD) were incorporated into a fiber-reinforced epoxy with the aim of improving the flow of healing agents to the crack site. The morphological investigation of the crack site was performed using field emission scanning electron microscopy (FESEM), showing the difference between the samples depending on the used solvent. The software analysis of sample photographs has been performed by calculating the fractured/ healed surface area of the samples, revealing that approximately 20% of the volume was affected by the impact. Fourier transform infrared spectroscopy (FTIR) revealed that poly (dicyclopentadiene) (PDCPD) formed at the healed interface. However, the FTIR investigation of catalyst stability in different solvents showed structural changes in GC and partial deactivation. The mechanical tests of the samples showed that a recovery of 60% after 24 h at room temperature could be achieved through the use of a solvent and very low concentration of GC. The performed research results are a good base to develop the model for predicting the processes and morphology, with the goal to design the final mechanical and in the future, thermal, properties in advance. This opens a new direction for future research in the field of composite healing.",
publisher = "Elsevier",
journal = "Materials Chemistry and Physics",
title = "Solvent effects on structural changes in self-healing epoxy composites",
volume = "256",
pages = "123761",
doi = "10.1016/j.matchemphys.2020.123761"
}

Radović, I., Stajčić, A., Radisavljević, A., Veljković, F., Čebela, M., Mitić, V. V.,& Radojević, V.. (2020). Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics
Elsevier., 256, 123761.
https://doi.org/10.1016/j.matchemphys.2020.123761

Radović I, Stajčić A, Radisavljević A, Veljković F, Čebela M, Mitić VV, Radojević V. Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics. 2020;256:123761.
doi:10.1016/j.matchemphys.2020.123761 .

Radović, Ivana, Stajčić, Aleksandar, Radisavljević, Andjela, Veljković, Filip, Čebela, Maria, Mitić, Vojislav V., Radojević, Vesna, "Solvent effects on structural changes in self-healing epoxy composites" in Materials Chemistry and Physics, 256 (2020):123761,
https://doi.org/10.1016/j.matchemphys.2020.123761 . .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Nikolić, Nebojša D.
AU  - Andrić, Stevan
AU  - Obradov, Marko
AU  - Radojević, Vesna
AU  - Vasiljević-Radović, Dana
PY  - 2020
UR  - https://www.etran.rs/2020/ZBORNIK_RADOVA/SADRZAJ_SEKCIJE_RADOVI.html
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3726
AB  - Copper coatings are produced on silicon wafer by electrodeposition (ED) in pulsating current (PC) regime. Electrodeposition was performed at various current density amplitudes in the range of 80−140 mA cm-2, frequency in the range of 30−100 Hz and coating thickness in the range of 10−60 μm. The resulting composite systems consist of monolayered copper films electrodeposited from sulfate bath on Si wafers with sputtered layers of Cr/Au. Roughness measurements were performed to evaluate properties of the copper coating surface. The coating roughness (R) was measured using Atomic Force Microscope in contact mode. The software Gwyddion was used for determination an average roughness parameter (Ra). After that (Artificial Neural Network-ANN) model was used to study the relationship between the parameters of electrodeposition process and roughness of copper coatings. The influence of experimental values: amplitude current density, frequency and thickness of coating on the surface roughness will be highlighted. Response surface methodology (RSM) was utilized to improve the correction between Ra and input parameters. Finally, the results of the average roughness (experimental and predicted) were used to estimate the new value of (Ra) of copper for each variation of the input parameters and compared capability of ANN and regression analysis for surface roughness generated under different electrochemical conditions. The coefficient of determination was found 92% for ANN and 93% for regression analysis.
PB  - Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering
C3  - Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020
T1  - Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings
UR  - https://hdl.handle.net/21.15107/rcub_cer_3726
ER  - 

@conference{
author = "Mladenović, Ivana and Lamovec, Jelena and Nikolić, Nebojša D. and Andrić, Stevan and Obradov, Marko and Radojević, Vesna and Vasiljević-Radović, Dana",
year = "2020",
abstract = "Copper coatings are produced on silicon wafer by electrodeposition (ED) in pulsating current (PC) regime. Electrodeposition was performed at various current density amplitudes in the range of 80−140 mA cm-2, frequency in the range of 30−100 Hz and coating thickness in the range of 10−60 μm. The resulting composite systems consist of monolayered copper films electrodeposited from sulfate bath on Si wafers with sputtered layers of Cr/Au. Roughness measurements were performed to evaluate properties of the copper coating surface. The coating roughness (R) was measured using Atomic Force Microscope in contact mode. The software Gwyddion was used for determination an average roughness parameter (Ra). After that (Artificial Neural Network-ANN) model was used to study the relationship between the parameters of electrodeposition process and roughness of copper coatings. The influence of experimental values: amplitude current density, frequency and thickness of coating on the surface roughness will be highlighted. Response surface methodology (RSM) was utilized to improve the correction between Ra and input parameters. Finally, the results of the average roughness (experimental and predicted) were used to estimate the new value of (Ra) of copper for each variation of the input parameters and compared capability of ANN and regression analysis for surface roughness generated under different electrochemical conditions. The coefficient of determination was found 92% for ANN and 93% for regression analysis.",
publisher = "Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering",
journal = "Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020",
title = "Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings",
url = "https://hdl.handle.net/21.15107/rcub_cer_3726"
}

Mladenović, I., Lamovec, J., Nikolić, N. D., Andrić, S., Obradov, M., Radojević, V.,& Vasiljević-Radović, D.. (2020). Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings. in Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020
Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering..
https://hdl.handle.net/21.15107/rcub_cer_3726

Mladenović I, Lamovec J, Nikolić ND, Andrić S, Obradov M, Radojević V, Vasiljević-Radović D. Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings. in Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_3726 .

Mladenović, Ivana, Lamovec, Jelena, Nikolić, Nebojša D., Andrić, Stevan, Obradov, Marko, Radojević, Vesna, Vasiljević-Radović, Dana, "Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings" in Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020 (2020),
https://hdl.handle.net/21.15107/rcub_cer_3726 .

TY  - JOUR
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna
AU  - Nikolić, Nebojša D.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3785
AB  - Mechanical features of the Cu coatings produced by the pulsating current (PC) regime on Si(111)
substrate have been investigated. The Cu coatings were electrodeposited by varying duty cycle (15−50 %) and keeping the current density amplitude constant (100 mA cm−2), and by keeping duty cycle constant (50 %) but varying the current density amplitude value (80−120 mA cm−2). The scanning electron microscopy (SEM) and optical microscopy (OM) techniques showed that morphology of the coatings changed with increasing the duty cycle from those with large and well defined grains to uniform and compact fine-grained coatings. The Vickers microindentation technique was used for an examination of hardness applying the Chen-Gao (C-G) composite hardness model and indentation creep features of the Cu coatings. The obtained values of hardness for the Cu coatings on Si(111) in the 0.9069−1.5079 GPa range indicated the successful implementation of the C-G model for this "soft film on hard substrate" composite system. The obtained stress exponents ranging from 2.79 to 5.29 indicated that creep mechanism changed from grain boundary sliding to both dislocation climbs and dislocation creep with decreasing duty cycle values. The maximum hardness and minimum stress exponent was obtained for the fine-grained Cu coating produced with a duty cycle of 50 % and the current density amplitude of 100 mA cm-2, indicating that its plastic deformation during microindentation was primarily caused by grain boundary sliding. Optimization of process formation and mechanical features of the Cu coatings was made using Response Surface Methodology (RSM), and error of 3.2 % showed a good agreement between predicted and measured values.
PB  - Electrochemical Science Group (ESG)
T2  - International Journal of Electrochemical Science
T1  - Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate
VL  - 15
VL  - 12191
SP  - 12173
EP  - 12191
DO  - 10.20964/2020.12.01
ER  - 

@article{
author = "Mladenović, Ivana and Lamovec, Jelena and Vasiljević-Radović, Dana and Radojević, Vesna and Nikolić, Nebojša D.",
year = "2020",
abstract = "Mechanical features of the Cu coatings produced by the pulsating current (PC) regime on Si(111)
substrate have been investigated. The Cu coatings were electrodeposited by varying duty cycle (15−50 %) and keeping the current density amplitude constant (100 mA cm−2), and by keeping duty cycle constant (50 %) but varying the current density amplitude value (80−120 mA cm−2). The scanning electron microscopy (SEM) and optical microscopy (OM) techniques showed that morphology of the coatings changed with increasing the duty cycle from those with large and well defined grains to uniform and compact fine-grained coatings. The Vickers microindentation technique was used for an examination of hardness applying the Chen-Gao (C-G) composite hardness model and indentation creep features of the Cu coatings. The obtained values of hardness for the Cu coatings on Si(111) in the 0.9069−1.5079 GPa range indicated the successful implementation of the C-G model for this "soft film on hard substrate" composite system. The obtained stress exponents ranging from 2.79 to 5.29 indicated that creep mechanism changed from grain boundary sliding to both dislocation climbs and dislocation creep with decreasing duty cycle values. The maximum hardness and minimum stress exponent was obtained for the fine-grained Cu coating produced with a duty cycle of 50 % and the current density amplitude of 100 mA cm-2, indicating that its plastic deformation during microindentation was primarily caused by grain boundary sliding. Optimization of process formation and mechanical features of the Cu coatings was made using Response Surface Methodology (RSM), and error of 3.2 % showed a good agreement between predicted and measured values.",
publisher = "Electrochemical Science Group (ESG)",
journal = "International Journal of Electrochemical Science",
title = "Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate",
volume = "15, 12191",
pages = "12173-12191",
doi = "10.20964/2020.12.01"
}

Mladenović, I., Lamovec, J., Vasiljević-Radović, D., Radojević, V.,& Nikolić, N. D.. (2020). Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate. in International Journal of Electrochemical Science
Electrochemical Science Group (ESG)., 15, 12173-12191.
https://doi.org/10.20964/2020.12.01

Mladenović I, Lamovec J, Vasiljević-Radović D, Radojević V, Nikolić ND. Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate. in International Journal of Electrochemical Science. 2020;15:12173-12191.
doi:10.20964/2020.12.01 .

Mladenović, Ivana, Lamovec, Jelena, Vasiljević-Radović, Dana, Radojević, Vesna, Nikolić, Nebojša D., "Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate" in International Journal of Electrochemical Science, 15 (2020):12173-12191,
https://doi.org/10.20964/2020.12.01 . .