TY  - CONF
AU  - Ozyuzer, Lutfi
AU  - Demirhan, Yasemin
AU  - Altan, Hakan
AU  - Ralević, Uroš
AU  - Ozdemir, Mehtap
AU  - Aygun, Gulnur
AU  - Stojanović, Danka B.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13048
AB  - There are exceptional advantages in the region where Terahertz (THz) frequency takes place that could be identified as; a non-ionizing bio-innocuous property, transparent characteristics in cardboard or textiles, and extremely discriminating absorption spectral lines which can provide a “genetic code” of various bio-materials. [1,2]. The resonant effects at various terahertz frequencies that were displayed by metamaterials have created to accomplish a very important situation. Metamaterials are virtually desirable platforms for investigating chiral effects.  In order to enhance these effects, producing the tunable chiral devices attracted lots of attention. Among the phase change materials for chiral metamaterials, graphene is a promising candidate due to its astonishing properties specifically in the THz and far infrared region.  In this study, a chiral metamaterial gammadion structure is designed and fabricated on both sides of the sapphire substrates. A commercial COMSOL and CST Microwave Studio programs are used to design and optimize the chiral metamaterial. Numerical simulations are based on the interaction of the chiral structure with linearly and circularly polarized light. In the experimental side, a resistive evaporation and dc magnetron sputtering method is used for the deposition of gold and Sb2Se3 films respectively. A single layer graphene is used, that is grown on a copper foil by chemical vapor deposition. The thin graphene layer transferred on the Sb2Se3 coated sapphire substrates. The conventional UV lithography and ion beam etching techniques are used for patterning process. The THz characterization measurements were performed in order to assess the THz frequency response and to demonstrate the dynamically tunable chiroptical response using optical pumping [3,4]. The active polarization manipulation capability of the Sb2Se3/graphene chiral metamaterial with frequency tunability are investigated both numerically and experimentally.
PB  - Belgrade : Institute of Physics
C3  - 16th Photonics Workshop : Book of abstracts
T1  - Chiral Devices for Terahertz Waves Based on Tunable Metamaterials
SP  - 49
EP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13048
ER  - 

@conference{
author = "Ozyuzer, Lutfi and Demirhan, Yasemin and Altan, Hakan and Ralević, Uroš and Ozdemir, Mehtap and Aygun, Gulnur and Stojanović, Danka B.",
year = "2023",
abstract = "There are exceptional advantages in the region where Terahertz (THz) frequency takes place that could be identified as; a non-ionizing bio-innocuous property, transparent characteristics in cardboard or textiles, and extremely discriminating absorption spectral lines which can provide a “genetic code” of various bio-materials. [1,2]. The resonant effects at various terahertz frequencies that were displayed by metamaterials have created to accomplish a very important situation. Metamaterials are virtually desirable platforms for investigating chiral effects.  In order to enhance these effects, producing the tunable chiral devices attracted lots of attention. Among the phase change materials for chiral metamaterials, graphene is a promising candidate due to its astonishing properties specifically in the THz and far infrared region.  In this study, a chiral metamaterial gammadion structure is designed and fabricated on both sides of the sapphire substrates. A commercial COMSOL and CST Microwave Studio programs are used to design and optimize the chiral metamaterial. Numerical simulations are based on the interaction of the chiral structure with linearly and circularly polarized light. In the experimental side, a resistive evaporation and dc magnetron sputtering method is used for the deposition of gold and Sb2Se3 films respectively. A single layer graphene is used, that is grown on a copper foil by chemical vapor deposition. The thin graphene layer transferred on the Sb2Se3 coated sapphire substrates. The conventional UV lithography and ion beam etching techniques are used for patterning process. The THz characterization measurements were performed in order to assess the THz frequency response and to demonstrate the dynamically tunable chiroptical response using optical pumping [3,4]. The active polarization manipulation capability of the Sb2Se3/graphene chiral metamaterial with frequency tunability are investigated both numerically and experimentally.",
publisher = "Belgrade : Institute of Physics",
journal = "16th Photonics Workshop : Book of abstracts",
title = "Chiral Devices for Terahertz Waves Based on Tunable Metamaterials",
pages = "49-49",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13048"
}

Ozyuzer, L., Demirhan, Y., Altan, H., Ralević, U., Ozdemir, M., Aygun, G.,& Stojanović, D. B.. (2023). Chiral Devices for Terahertz Waves Based on Tunable Metamaterials. in 16th Photonics Workshop : Book of abstracts
Belgrade : Institute of Physics., 49-49.
https://hdl.handle.net/21.15107/rcub_vinar_13048

Ozyuzer L, Demirhan Y, Altan H, Ralević U, Ozdemir M, Aygun G, Stojanović DB. Chiral Devices for Terahertz Waves Based on Tunable Metamaterials. in 16th Photonics Workshop : Book of abstracts. 2023;:49-49.
https://hdl.handle.net/21.15107/rcub_vinar_13048 .

Ozyuzer, Lutfi, Demirhan, Yasemin, Altan, Hakan, Ralević, Uroš, Ozdemir, Mehtap, Aygun, Gulnur, Stojanović, Danka B., "Chiral Devices for Terahertz Waves Based on Tunable Metamaterials" in 16th Photonics Workshop : Book of abstracts (2023):49-49,
https://hdl.handle.net/21.15107/rcub_vinar_13048 .