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

doi:10.1021/nl503159d

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

Department of Life Science

Research output: Contribution to journal › Article › peer-review

77 Scopus citations

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 language	English
Pages (from-to)	5584-5589
Number of pages	6
Journal	Nano Letters
Volume	14
Issue number	10
DOIs	https://doi.org/10.1021/nl503159d
State	Published - 8 Oct 2014

Keywords

DNA translocation
Self-organized formation
fluorescence enhancement
graphene
nanopore
optical antennae

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10.1021/nl503159d

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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.",

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AU - Nam, Sungwoo

AU - Choi, Inhee

AU - Fu, Chi Cheng

AU - Kim, Kwanpyo

AU - Hong, Soongweon

AU - Choi, Yeonho

AU - Zettl, Alex

AU - Lee, Luke P.

PY - 2014/10/8

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N2 - 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.

AB - 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.

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Graphene nanopore with a self-integrated optical antenna

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