Chiral Devices for Terahertz Waves Based on Tunable Metamaterials
Аутори
Ozyuzer, LutfiDemirhan, Yasemin
Altan, Hakan
Ralević, Uroš
Ozdemir, Mehtap
Aygun, Gulnur
Stojanović, Danka B.
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 Mic...rowave 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.
Извор:
16th Photonics Workshop : Book of abstracts, 2023, 49-49Издавач:
- Belgrade : Institute of Physics
Финансирање / пројекти:
- TUBITAK (Scientific and Technical Research Council of Turkey) project number 220N350 which is a bilateral project with Vinča Institute of Nuclear Sciences, Belgrade, Serbia which is supported by Ministry of Science, Technological Development and Innovations of the Republic of Serbia under theme 0402312.
Напомена:
- XVI Photonics Workshop : Book of abstracts; March 12-15, 2023; Kopaonik, Serbia
Колекције
Институција/група
VinčaTY - 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 .