• 文献标题:   Graphene Nanopore with a Self-Integrated Optical Antenna
  • 文献类型:   Article
  • 作  者:   NAM S, CHOI I, FU CC, KIM K, HONG S, CHOI Y, ZETTL A, LEE LP
  • 作者关键词:   selforganized formation, graphene, nanopore, optical antennae, dna translocation, fluorescence enhancement
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Univ Calif Berkeley
  • 被引频次:   48
  • DOI:   10.1021/nl503159d
  • 出版年:   2014

▎ 摘  要

We report graphene nanopores with integrated optical antennae. We demonstrate that a nanometer-sized heated spot created by photon-to-heat conversion of a gold nanorod resting on a graphene membrane forms a nanoscale pore with a self-integrated optical antenna in a single step. The distinct plasmonic traits of metal nanoparticles, which have a unique capability to concentrate light into nanoscale regions, yield the significant advantage of parallel nanopore fabrication compared to the conventional sequential process using an electron beam. Tunability of both the nanopore dimensions and the optical characteristics of plasmonic nanoantennae are further achieved. Finally, the key optical function of our self-integrated optical antenna on the vicinity of graphene nanopore is manifested by multifold fluorescent signal enhancement during DNA translocation.