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

Shun Cao, Weixing Yu, Taisheng Wang, Honghai Shen, Xudong Han, Wenbin Xu, Xuming Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)1876-1884
Number of pages9
JournalOptical Materials Express
Issue number9
Publication statusPublished - 1 Jan 2014

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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