Actively tunable terahertz metamaterial with single-band and dual-band switching characteristic
| Autor: | Xingzhuo Hu, Daoye Zheng, Yu-Sheng Lin |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science business.industry Bar (music) Terahertz radiation Detector Physics::Optics Metamaterial Resonance 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 01 natural sciences Transverse mode Resonator 0103 physical sciences Optoelectronics General Materials Science Multi-band device 0210 nano-technology business |
| Zdroj: | Applied Physics A. 126 |
| ISSN: | 1432-0630 0947-8396 |
| DOI: | 10.1007/s00339-019-3274-5 |
| Popis: | We present a design of tunable terahertz (THz) metamaterial (TTM) with single-band and dual-band filtering and switching characteristics. The proposed device is composed of face-to-face split-ring resonator (SRR) and a central bar. By moving the SRRs to change the gap between SRRs and central bar, the free spectrum ranges (FSR) could be bi-directionally broadened 0.14 THz and narrowed 0.19 THz at TE and TM modes, respectively. To control the coplanar moving central bar, the electromagnetic response of TTM device exhibits polarization-dependent characteristic. TTM shows the switching characteristic between single-band to dual-band resonance at TE mode and exhibits resonance-insensitive to the displacement of central bar at TM mode. These results open an avenue to be potentially used for detector, sensor, and switch in the THz-wave applications. |
| Databáze: | OpenAIRE |
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