Meta-microwindmill structure with multiple absorption peaks for the detection of ketamine and amphetamine type stimulants in terahertz domain | Zendy

Shun Cao | Zendy; Weixing Yu | Zendy; Taisheng Wang | Zendy; Honghai Shen | Zendy; Xudong Han | Zendy; Wenbin Xu | Zendy; Xuming Zhang | Zendy

Open Access

Meta-microwindmill structure with multiple absorption peaks for the detection of ketamine and amphetamine type stimulants in terahertz domain

Author(s) -

Shun Cao,

Weixing Yu,

Taisheng Wang,

Honghai Shen,

Xudong Han,

Wenbin Xu,

Xuming Zhang

Publication year - 2014

Publication title -

optical materials express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.925

H-Index - 66

ISSN - 2159-3930

DOI - 10.1364/ome.4.001876

Subject(s) - terahertz radiation , materials science , absorption (acoustics) , metamaterial , wavelength , molar absorptivity , optics , optoelectronics , terahertz spectroscopy and technology , detector , physics , composite material

We report a metamaterial based microwindmill array with a periodic arrangement that can be used in terahertz detector as an absorbing layer. It is found that this structure can absorb terahertz waves efficiently with an average absorptivity of 95% at multiple frequencies of 1.516, 2.205, 2.424 and 2.565 THz, which are absorption peaks of four kinds of drugs. The efficient absorbing property of meta-microwindmill on terahertz wave can be explained in terms of the synergetic effects of localized surface plasmon resonant effect and slow light mode. Moreover, the effect of the error of the structural parameters on the absorption efficiency is carefully analyzed in detail to guide the fabrication.Department of Applied Physic

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