Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 8, Pages 7655-7660Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b21456
Keywords
metasurfaces; metamaterials; terahertz spectroscopy; phase retardation; waveplate
Funding
- Advanced MetaMaterials (CAMM) - Ministry of Science, ICT and Future Planning as a Global Frontier Project [CAMM-2014M3A6B3063710, CAMM-2014M3A6B3063709]
- National Research Foundation of Korea (NRF) - Ministry of Science [2017R1A4A1015426]
- Basic Science Research Program through the NRF - Ministry of Education [2018R1A6A3A01013309]
- Basic Science Research Program through the NRF - Korean government (MSIP) [NRF-2018R1C1B6009007]
- National Research Foundation of Korea [2018R1A6A3A01013309] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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