Journal article
Scalable and Tunable Periodic Graphene Nanohole Arrays for Mid-Infrared Plasmonics
Despite its great potential for a wide variety of devices, especially mid-infrared biosensors and photodetectors, graphene plasmonics is still confined to academic research. A major reason is the fact that, so far, expensive and low-throughput lithography techniques are needed to fabricate graphene nanostructures.
Here, we report for the first time a detailed experimental study on electrostatically tunable graphene nanohole array surfaces with periods down to 100 nm, showing clear plasmonic response in the range similar to 1300-1600 cm-1, which can be fabricated by a scalable nanoimprint technique. Such large area plasmonic nanostructures are suitable for industrial applications, for example, surface-enhanced infrared absorption (SEIRA) sensing, as they combine easy design, extreme field confinement, and the possibility to excite multiple plasmon modes enabling multiband sensing, a feature not readily available in nanoribbons or other localized resonant structures.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2018 |
Pages: | 5913-5918 |
ISSN: | 15306992 and 15306984 |
Types: | Journal article |
DOI: | 10.1021/acs.nanolett.8b02613 |
ORCIDs: | Whelan, Patrick R. , Shivayogimath, Abhay and 0000-0002-2570-3031 |