Simulation of a plasmonic tip-terminated scanning nanowire waveguide for molecular imaging

Nathan P. Malcolm; Alex J. Heltzel; Konstantin V. Sokolov; Li Shi; John R. Howell

doi:10.1063/1.3013816

Simulation of a plasmonic tip-terminated scanning nanowire waveguide for molecular imaging

Nathan P. Malcolm, Alex J. Heltzel, Konstantin V. Sokolov, Li Shi, John R. Howell

Imaging Physics

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

11 Scopus citations

Abstract

Finite difference time domain simulation reveals plasmon coupling and local field enhancement at the gap between the gold nanoparticle (NP) tip of a ZnO nanowire (NW) waveguide and a gold-coated substrate or a gold NP probe. The region of field enhancement is about three times smaller than the 100 nm diameter of the gold NP tip, making the NW waveguide grown on a transparent microcantilever well-suited for near field imaging of single molecules immobilized on a gold substrate or gold NP-labeled cell membranes with superior spatial resolution and signal to noise ratio.

Original language	English (US)
Article number	193101
Journal	Applied Physics Letters
Volume	93
Issue number	19
DOIs	https://doi.org/10.1063/1.3013816
State	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3013816

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title = "Simulation of a plasmonic tip-terminated scanning nanowire waveguide for molecular imaging",

abstract = "Finite difference time domain simulation reveals plasmon coupling and local field enhancement at the gap between the gold nanoparticle (NP) tip of a ZnO nanowire (NW) waveguide and a gold-coated substrate or a gold NP probe. The region of field enhancement is about three times smaller than the 100 nm diameter of the gold NP tip, making the NW waveguide grown on a transparent microcantilever well-suited for near field imaging of single molecules immobilized on a gold substrate or gold NP-labeled cell membranes with superior spatial resolution and signal to noise ratio.",

author = "Malcolm, {Nathan P.} and Heltzel, {Alex J.} and Sokolov, {Konstantin V.} and Li Shi and Howell, {John R.}",

note = "Funding Information: This work is supported in part by National Science Foundation (Grant No. CBET 0553649) and Texas Higher Education Coordinating Board Norman Hackerman Advanced Research Program. We thank Kort Travis for helpful comments on this manuscript. ",

year = "2008",

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language = "English (US)",

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journal = "Applied Physics Letters",

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T1 - Simulation of a plasmonic tip-terminated scanning nanowire waveguide for molecular imaging

AU - Malcolm, Nathan P.

AU - Heltzel, Alex J.

AU - Sokolov, Konstantin V.

AU - Shi, Li

AU - Howell, John R.

N1 - Funding Information: This work is supported in part by National Science Foundation (Grant No. CBET 0553649) and Texas Higher Education Coordinating Board Norman Hackerman Advanced Research Program. We thank Kort Travis for helpful comments on this manuscript.

PY - 2008

Y1 - 2008

N2 - Finite difference time domain simulation reveals plasmon coupling and local field enhancement at the gap between the gold nanoparticle (NP) tip of a ZnO nanowire (NW) waveguide and a gold-coated substrate or a gold NP probe. The region of field enhancement is about three times smaller than the 100 nm diameter of the gold NP tip, making the NW waveguide grown on a transparent microcantilever well-suited for near field imaging of single molecules immobilized on a gold substrate or gold NP-labeled cell membranes with superior spatial resolution and signal to noise ratio.

AB - Finite difference time domain simulation reveals plasmon coupling and local field enhancement at the gap between the gold nanoparticle (NP) tip of a ZnO nanowire (NW) waveguide and a gold-coated substrate or a gold NP probe. The region of field enhancement is about three times smaller than the 100 nm diameter of the gold NP tip, making the NW waveguide grown on a transparent microcantilever well-suited for near field imaging of single molecules immobilized on a gold substrate or gold NP-labeled cell membranes with superior spatial resolution and signal to noise ratio.

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

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ER -

Simulation of a plasmonic tip-terminated scanning nanowire waveguide for molecular imaging

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