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Title: Fourcross shaped metamaterial filters fabricated from high temperature superconducting YBCO and Au thin films for terahertz waves
Authors: Demirhan, Yasemin
Alaboz, Hakan
Nebioğlu, Mehmet Ali
Mulla, B.
Akkaya, M.
Altan, Hakan
Sabah, Cumali
Özyüzer, Lütfi
Keywords: Metamaterial
Terahertz (THz) waves
Time domain spectroscop
Yttrium barium copper oxides
Thin films
Issue Date: Jun-2017
Publisher: IOP Publishing Ltd.
Source: Demirhan, Y., Alaboz, H., Nebioğlu, M. A., Mulla, B., Akkaya, M., Altan, H., Sabah, C., and Özyüzer, L. (2017). Fourcross shaped metamaterial filters fabricated from high temperature superconducting YBCO and Au thin films for terahertz waves. Superconductor Science and Technology, 30(7). doi:10.1088/1361-6668/aa6fbe
Abstract: In this study, we present a new, unique fourcross shaped metamaterial terahertz (THz) filter fabricated from both gold thin films and YBa2Cu3O7-δ high Tc superconducting thin films. A commercial electromagnetic simulation software, CST Microwave Studio, is used to design and optimize the metamaterial filter structures. The proposed fourcross shaped rectangular filter structure consists of periodic metallic rings where strip lines are located at the sides of the ring. Fourcross metamaterial filters are fabricated by using e-beam lithography and ion beam exhing techniques. Terahertz time-domain spectroscopy measurements validated the design predictions for both the center frequencies and bandwidths of the resonances due to the fourcross structures. The resonance switching of the transmission spectra was investigated by lowering the temperature below the critical transition temperature. This resonance switching effect is not observed in filters made up of metals. This novel fourcross rectangular resonator with a temperature-dependent resonance behavior holds great potential for active, tunable and low loss THz devices for imaging, sensing, and detection applications.
ISSN: 0953-2048
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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