Resonance broadening and tuning of split ring resonators by top-gated epitaxial graphene on SiC substrate

Date
2013
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Source Title
Applied Physics Letters
Print ISSN
0003-6951
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Publisher
AIP Publishing LLC
Volume
103
Issue
18
Pages
Language
English
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Abstract

Split ring resonators (SRRs) are subwavelength structures that are able to localize and enhance the electromagnetic wave. Controlling the plasmonic resonance behavior of metallic nanostructures, such as SRRs, plays an important role in optoelectronics and nanophotonics applications. Electrically tunable carrier concentration of graphene provides hybrid devices, where the plasmonic structures and graphene are combined. In this paper, we report the design, fabrication, and measurement of a device comprising a SRR array on epitaxial graphene. We obtained resonance broadening and tuning of split ring resonators by utilizing an epitaxial graphene transistor with transparent top-gate.

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