Single-Layer Metasurfaces as Spectrally Tunable Terahertz Half- and Quarter-Waveplates
- Authors
- Lee, Seojoo; Kim, Won Tae; Kang, Ji-Hun; Kang, Bong Joo; Rotermund, Fabian; Park, Q-Han
- Issue Date
- 27-2월-2019
- Publisher
- AMER CHEMICAL SOC
- Keywords
- metasurfaces; metamaterials; terahertz spectroscopy; phase retardation; waveplate
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.11, no.8, pp.7655 - 7660
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 11
- Number
- 8
- Start Page
- 7655
- End Page
- 7660
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/67274
- DOI
- 10.1021/acsami.8b21456
- ISSN
- 1944-8244
- Abstract
- 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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Collections - College of Science > Department of Physics > 1. Journal Articles
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