Single-Layer Metasurfaces as Spectrally Tunable Terahertz Half- and Quarter-Waveplates

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We propose a single-layer terahertz metasurface that acts as an efficient terahertz waveplate, providing phase retardation of up to 180 with a tunable operation frequency. Designed with the tight coupling of elementary resonators, our metasurface provides extraordinarily strong hyperbolicity that is closely associated with the distance between resonators, enabling both significant phase retardation and spectral tunability through mechanical deformation. The proposed concept of terahertz waveplates based on relatively simple metastructures fabricated on stretchable polydimethylsiloxane is experimentally confirmed using terahertz spectroscopy. It is believed that the proposed design will pave the way for a diverse range of terahertz applications.
Publisher
American Chemical Society
Issue Date
2019-02
Language
English
Article Type
Article
Citation

ACS Applied Materials and Interfaces, v.11, no.8, pp.7655 - 7660

ISSN
1944-8244
DOI
10.1021/acsami.8b21456
URI
http://hdl.handle.net/10203/254140
Appears in Collection
PH-Journal Papers(저널논문)
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