Graphene nanopore with a self-integrated optical antenna

Sungwoo Nam, Inhee Choi, Chi Cheng Fu, Kwanpyo Kim, Soongweon Hong, Yeonho Choi, Alex Zettl, Luke P. Lee

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5584-5589
Number of pages6
JournalNano letters
Volume14
Issue number10
DOIs
Publication statusPublished - 2014 Oct 8

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All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Nam, S., Choi, I., Fu, C. C., Kim, K., Hong, S., Choi, Y., Zettl, A., & Lee, L. P. (2014). Graphene nanopore with a self-integrated optical antenna. Nano letters, 14(10), 5584-5589. https://doi.org/10.1021/nl503159d