TY  - JOUR
AU  - Pagnacco, Maja
AU  - Maksimović, Jelena P.
AU  - Daković, Marko
AU  - Bokić, Bojana
AU  - Mouchet, Sébastien R.
AU  - Verbiest, Thierry
AU  - Caudano, Yves
AU  - Kolarić, Branko
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5600
AB  - In this work, we describe the crazy-clock phenomenon involving the state I (low iodide and iodine concentration) to state II (high iodide and iodine concentration with new iodine phase) transition after a Briggs–Rauscher (BR) oscillatory process. While the BR crazy-clock phenomenon is known, this is the first time that crazy-clock behavior is linked and explained with the symmetry-breaking phenomenon, highlighting the entire process in a novel way. The presented phenomenon has been thoroughly investigated by running more than 60 experiments, and evaluated by using statistical cluster K-means analysis. The mixing rate, as well as the magnetic bar shape and dimensions, have a strong influence on the transition appearance. Although the transition for both mixing and no-mixing conditions are taking place completely randomly, by using statistical cluster analysis we obtain different numbers of clusters (showing the time-domains where the transition is more likely to occur). In the case of stirring, clusters are more compact and separated, revealed new hidden details regarding the chemical dynamics of nonlinear processes. The significance of the presented results is beyond oscillatory reaction kinetics since the described example belongs to the small class of chemical systems that shows intrinsic randomness in their response and it might be considered as a real example of a classical liquid random number generator.
PB  - MDPI AG
T2  - Symmetry
T1  - Spontaneous Symmetry Breaking: The Case of Crazy Clock and Beyond
VL  - 14
IS  - 2
SP  - 413
DO  - 10.3390/sym14020413
ER  - 

@article{
author = "Pagnacco, Maja and Maksimović, Jelena P. and Daković, Marko and Bokić, Bojana and Mouchet, Sébastien R. and Verbiest, Thierry and Caudano, Yves and Kolarić, Branko",
year = "2022",
abstract = "In this work, we describe the crazy-clock phenomenon involving the state I (low iodide and iodine concentration) to state II (high iodide and iodine concentration with new iodine phase) transition after a Briggs–Rauscher (BR) oscillatory process. While the BR crazy-clock phenomenon is known, this is the first time that crazy-clock behavior is linked and explained with the symmetry-breaking phenomenon, highlighting the entire process in a novel way. The presented phenomenon has been thoroughly investigated by running more than 60 experiments, and evaluated by using statistical cluster K-means analysis. The mixing rate, as well as the magnetic bar shape and dimensions, have a strong influence on the transition appearance. Although the transition for both mixing and no-mixing conditions are taking place completely randomly, by using statistical cluster analysis we obtain different numbers of clusters (showing the time-domains where the transition is more likely to occur). In the case of stirring, clusters are more compact and separated, revealed new hidden details regarding the chemical dynamics of nonlinear processes. The significance of the presented results is beyond oscillatory reaction kinetics since the described example belongs to the small class of chemical systems that shows intrinsic randomness in their response and it might be considered as a real example of a classical liquid random number generator.",
publisher = "MDPI AG",
journal = "Symmetry",
title = "Spontaneous Symmetry Breaking: The Case of Crazy Clock and Beyond",
volume = "14",
number = "2",
pages = "413",
doi = "10.3390/sym14020413"
}

Pagnacco, M., Maksimović, J. P., Daković, M., Bokić, B., Mouchet, S. R., Verbiest, T., Caudano, Y.,& Kolarić, B.. (2022). Spontaneous Symmetry Breaking: The Case of Crazy Clock and Beyond. in Symmetry
MDPI AG., 14(2), 413.
https://doi.org/10.3390/sym14020413

Pagnacco M, Maksimović JP, Daković M, Bokić B, Mouchet SR, Verbiest T, Caudano Y, Kolarić B. Spontaneous Symmetry Breaking: The Case of Crazy Clock and Beyond. in Symmetry. 2022;14(2):413.
doi:10.3390/sym14020413 .

Pagnacco, Maja, Maksimović, Jelena P., Daković, Marko, Bokić, Bojana, Mouchet, Sébastien R., Verbiest, Thierry, Caudano, Yves, Kolarić, Branko, "Spontaneous Symmetry Breaking: The Case of Crazy Clock and Beyond" in Symmetry, 14, no. 2 (2022):413,
https://doi.org/10.3390/sym14020413 . .

TY  - JOUR
AU  - Simovic-Pavlović, Marina
AU  - Pagnacco, Maja
AU  - Grujić, Dusan
AU  - Bokić, Bojana
AU  - Vasiljević, Darko
AU  - Mouchet, Sébastien
AU  - Verbiest, Thierry
AU  - Kolarić, Branko
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5622
AB  - In this method, the potential of optics and holography to uncover hidden details of a natural system's dynamical response at the nanoscale is exploited. In the first part, the optical and holographic studies of natural photonic structures are presented as well as conditions for the appearance of the photophoretic effect, namely, the displacement or deformation of a nanostructure due to a light-induced thermal gradient, at the nanoscale. This effect is revealed by real-time digital holographic interferometry monitoring the deformation of scales covering the wings of insects induced by temperature. The link between geometry and nanocorrugation that leads to the emergence of the photophoretic effect is experimentally demonstrated and confirmed. In the second part, it is shown how holography can be potentially used to uncover hidden details in the chemical system with nonlinear dynamics, such as the phase transition phenomenon that occurs in complex oscillatory Briggs-Rauscher (BR) reaction. The presented potential of holography at the nanoscale could open enormous possibilities for controlling and molding the photophoretic effect and pattern formation for various applications such as particle trapping and levitation, including the movement of unburnt hydrocarbons in the atmosphere and separation of different aerosols, decomposition of microplastics and fractionation of particles in general, and assessment of temperature and thermal conductivity of micron-size fuel particles.
PB  - MyJove Corporation
T2  - Journal of Visualized Experiments
T1  - Uncovering Hidden Dynamics of Natural Photonic Structures using Holographic Imaging
IS  - 181
SP  - e63676
DO  - 10.3791/63676
ER  - 

@article{
author = "Simovic-Pavlović, Marina and Pagnacco, Maja and Grujić, Dusan and Bokić, Bojana and Vasiljević, Darko and Mouchet, Sébastien and Verbiest, Thierry and Kolarić, Branko",
year = "2022",
abstract = "In this method, the potential of optics and holography to uncover hidden details of a natural system's dynamical response at the nanoscale is exploited. In the first part, the optical and holographic studies of natural photonic structures are presented as well as conditions for the appearance of the photophoretic effect, namely, the displacement or deformation of a nanostructure due to a light-induced thermal gradient, at the nanoscale. This effect is revealed by real-time digital holographic interferometry monitoring the deformation of scales covering the wings of insects induced by temperature. The link between geometry and nanocorrugation that leads to the emergence of the photophoretic effect is experimentally demonstrated and confirmed. In the second part, it is shown how holography can be potentially used to uncover hidden details in the chemical system with nonlinear dynamics, such as the phase transition phenomenon that occurs in complex oscillatory Briggs-Rauscher (BR) reaction. The presented potential of holography at the nanoscale could open enormous possibilities for controlling and molding the photophoretic effect and pattern formation for various applications such as particle trapping and levitation, including the movement of unburnt hydrocarbons in the atmosphere and separation of different aerosols, decomposition of microplastics and fractionation of particles in general, and assessment of temperature and thermal conductivity of micron-size fuel particles.",
publisher = "MyJove Corporation",
journal = "Journal of Visualized Experiments",
title = "Uncovering Hidden Dynamics of Natural Photonic Structures using Holographic Imaging",
number = "181",
pages = "e63676",
doi = "10.3791/63676"
}

Simovic-Pavlović, M., Pagnacco, M., Grujić, D., Bokić, B., Vasiljević, D., Mouchet, S., Verbiest, T.,& Kolarić, B.. (2022). Uncovering Hidden Dynamics of Natural Photonic Structures using Holographic Imaging. in Journal of Visualized Experiments
MyJove Corporation.(181), e63676.
https://doi.org/10.3791/63676

Simovic-Pavlović M, Pagnacco M, Grujić D, Bokić B, Vasiljević D, Mouchet S, Verbiest T, Kolarić B. Uncovering Hidden Dynamics of Natural Photonic Structures using Holographic Imaging. in Journal of Visualized Experiments. 2022;(181):e63676.
doi:10.3791/63676 .

Simovic-Pavlović, Marina, Pagnacco, Maja, Grujić, Dusan, Bokić, Bojana, Vasiljević, Darko, Mouchet, Sébastien, Verbiest, Thierry, Kolarić, Branko, "Uncovering Hidden Dynamics of Natural Photonic Structures using Holographic Imaging" in Journal of Visualized Experiments, no. 181 (2022):e63676,
https://doi.org/10.3791/63676 . .