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Tuning surface plasmons in graphene ribbons with liquid crystal layer
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Paper Abstract

Surface plasmons in graphene possess stronger mode confinement and lower propagation loss. One way to excite the surface plasmons is placing a periodic array of graphene nano-ribbons on top of a dielectric substrate. However once the system is fabricated it is not possible to change its optical properties. Liquid crystals (LC) are a uniaxial medium with an optical axis easily controlled by external stimuli. We suggest tuning the surface plasmons in an array of graphene ribbons by placing a LC slab on top of the ribbons. A voltage applied to the LC layer shifts the graphene ribbons plasmonic notch and changes its depth.

Paper Details

Date Published: 23 September 2016
PDF: 7 pages
Proc. SPIE 9940, Liquid Crystals XX, 994019 (23 September 2016); doi: 10.1117/12.2237264
Show Author Affiliations
Viktor Yu. Reshetnyak, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Timothy J. Bunning, Air Force Research Lab. (United States)
Dean R. Evans, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 9940:
Liquid Crystals XX
Iam Choon Khoo, Editor(s)

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