Two-dimensional gradient-index metamaterial with sawtooth profile
Аутори
Jakšić, ZoranSarajlić, Milija
Lazić, Žarko
Dalarsson, Mariana
Randjelović, Danijela
Radulović, Katarina
Tanasković, Dragan
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
We investigate theoretically and experimentally a binary metal-dielectric metamaterial with a sawtooth profile. The structure consists of a two-dimensional array of pillars with submicrometer diameters. The pillar diameters linearly vary along one axis and are constant along the other. This furnishes a serrated spatial profile of effective refractive index along a single axis. We first present a set of analytical solutions defining the electromagnetic fields in such a structure. Further we give the results of our experimental fabrication of gradient metamaterial with a sawtooth spatial profile. The basic material for pillars was photoresist. Their geometry was defined using direct laser writing. Resist was overexposed in controlled manner in order to obtain pillars with diameters below the nominal resolution of the laser writer. The microfabricated pillars were coated by a sputter-deposited aluminum film. For characterization we utilized optical and atomic force microscopy and angledep...endent Fourier Transform infrared spectroscopy. We envision the applicability of our graded metasurfaces in transformation optics.
Кључне речи:
metamaterials / metal-dielectrics / frequency-selective surfaces / microfabricationИзвор:
Mikrotalasna revija, 2013, 19, 2, 96-101Издавач:
- Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd
Финансирање / пројекти:
- Микро, нано-системи и сензори за примену у електропривреди, процесној индустрији и заштити животне средине (RS-MESTD-Technological Development (TD or TR)-32008)
Институција/група
IHTMTY - JOUR AU - Jakšić, Zoran AU - Sarajlić, Milija AU - Lazić, Žarko AU - Dalarsson, Mariana AU - Randjelović, Danijela AU - Radulović, Katarina AU - Tanasković, Dragan PY - 2013 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1170 AB - We investigate theoretically and experimentally a binary metal-dielectric metamaterial with a sawtooth profile. The structure consists of a two-dimensional array of pillars with submicrometer diameters. The pillar diameters linearly vary along one axis and are constant along the other. This furnishes a serrated spatial profile of effective refractive index along a single axis. We first present a set of analytical solutions defining the electromagnetic fields in such a structure. Further we give the results of our experimental fabrication of gradient metamaterial with a sawtooth spatial profile. The basic material for pillars was photoresist. Their geometry was defined using direct laser writing. Resist was overexposed in controlled manner in order to obtain pillars with diameters below the nominal resolution of the laser writer. The microfabricated pillars were coated by a sputter-deposited aluminum film. For characterization we utilized optical and atomic force microscopy and angledependent Fourier Transform infrared spectroscopy. We envision the applicability of our graded metasurfaces in transformation optics. PB - Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd T2 - Mikrotalasna revija T1 - Two-dimensional gradient-index metamaterial with sawtooth profile VL - 19 IS - 2 SP - 96 EP - 101 UR - https://hdl.handle.net/21.15107/rcub_cer_1170 ER -
@article{ author = "Jakšić, Zoran and Sarajlić, Milija and Lazić, Žarko and Dalarsson, Mariana and Randjelović, Danijela and Radulović, Katarina and Tanasković, Dragan", year = "2013", abstract = "We investigate theoretically and experimentally a binary metal-dielectric metamaterial with a sawtooth profile. The structure consists of a two-dimensional array of pillars with submicrometer diameters. The pillar diameters linearly vary along one axis and are constant along the other. This furnishes a serrated spatial profile of effective refractive index along a single axis. We first present a set of analytical solutions defining the electromagnetic fields in such a structure. Further we give the results of our experimental fabrication of gradient metamaterial with a sawtooth spatial profile. The basic material for pillars was photoresist. Their geometry was defined using direct laser writing. Resist was overexposed in controlled manner in order to obtain pillars with diameters below the nominal resolution of the laser writer. The microfabricated pillars were coated by a sputter-deposited aluminum film. For characterization we utilized optical and atomic force microscopy and angledependent Fourier Transform infrared spectroscopy. We envision the applicability of our graded metasurfaces in transformation optics.", publisher = "Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd", journal = "Mikrotalasna revija", title = "Two-dimensional gradient-index metamaterial with sawtooth profile", volume = "19", number = "2", pages = "96-101", url = "https://hdl.handle.net/21.15107/rcub_cer_1170" }
Jakšić, Z., Sarajlić, M., Lazić, Ž., Dalarsson, M., Randjelović, D., Radulović, K.,& Tanasković, D.. (2013). Two-dimensional gradient-index metamaterial with sawtooth profile. in Mikrotalasna revija Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd., 19(2), 96-101. https://hdl.handle.net/21.15107/rcub_cer_1170
Jakšić Z, Sarajlić M, Lazić Ž, Dalarsson M, Randjelović D, Radulović K, Tanasković D. Two-dimensional gradient-index metamaterial with sawtooth profile. in Mikrotalasna revija. 2013;19(2):96-101. https://hdl.handle.net/21.15107/rcub_cer_1170 .
Jakšić, Zoran, Sarajlić, Milija, Lazić, Žarko, Dalarsson, Mariana, Randjelović, Danijela, Radulović, Katarina, Tanasković, Dragan, "Two-dimensional gradient-index metamaterial with sawtooth profile" in Mikrotalasna revija, 19, no. 2 (2013):96-101, https://hdl.handle.net/21.15107/rcub_cer_1170 .