• 文献标题:   Scalable and Tunable Periodic Graphene Nanohole Arrays for Mid-Infrared Plasmonics
  • 文献类型:   Article
  • 作  者:   GOPALAN KK, PAULILLO B, MACKENZIE DMA, RODRIGO D, BAREZA N, WHELAN PR, SHIVAYOGIMATH A, PRUNERI V
  • 作者关键词:   graphene plasmonic, plasmonic crystal, seira, largescale nanopatterning, nanoimprint lithography
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Barcelona Inst Sci Technol
  • 被引频次:   5
  • DOI:   10.1021/acs.nanolett.8b02613
  • 出版年:   2018

▎ 摘  要

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.