Tunable circular dichroism of stretchable chiral metamaterial

Circular dichroism (CD) of a stretchable chiral metamaterial with bilayer L-shaped and T-shaped Au patterns on the Polydimethylsiloxane substrate (SCMM-BLT) is investigated theoretically. Due to the excitation of plasmonic hybridization modes, CD effect happens. SCMM-BLT can produce large optical ch...

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Bibliographic Details
Published in:Applied physics express 2020-04, Vol.13 (4), p.42008
Main Authors: Zhou, Lei, Wang, Yueke, Zhou, Jiaxin, Ding, Jian, Su, Zengping, Li, Mingxing, Lu, Mengjia, Shi, Hangyu, Sang, Tian
Format: Article
Language:English
Subjects:
chiral
circular dichroism
flexible material
metamaterial
plasmonic
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Summary:Circular dichroism (CD) of a stretchable chiral metamaterial with bilayer L-shaped and T-shaped Au patterns on the Polydimethylsiloxane substrate (SCMM-BLT) is investigated theoretically. Due to the excitation of plasmonic hybridization modes, CD effect happens. SCMM-BLT can produce large optical chirality (OC) of 53.6% in mid-infrared region, and we attribute the double bands of CD to the excitation of the bonding and antibonding modes. By stretching SCMM-BLT, the bands of CD shift to longer wavelengths, which prove SCMM-BLT can be a candidate as the tunable chiral metamaterial. Our findings pave a way in designing wearable electronic devices, such as sensors.
ISSN:1882-0778
1882-0786
DOI:10.35848/1882-0786/ab8054