Nanoparticle-enhanced diffraction gratings for ultrasensitive surface plasmon biosensing

Alastair W. Wark; Jin Lee Hye; Abraham J. Qavi; Robert M. Corn

doi:10.1021/ac071062b

Nanoparticle-enhanced diffraction gratings for ultrasensitive surface plasmon biosensing

Alastair W. Wark, Jin Lee Hye, Abraham J. Qavi, Robert M. Corn

University of California at Irvine

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

84 Scopus citations

Abstract

Ultrasensitive surface bioaffinity sensors are created by the adsorption of gold nanoparticles onto gold diffraction gratings. An enhanced diffraction obtained in a surface plasmon resonance geometry is observed due to the optical coupling of the planar surface plasmons in the grating to the localized surface plasmons in the gold nanoparticles. As a first example, these nanoparticle grating biosensors are employed to detect unmodified DNA at a concentration of 10 fM.

Original language	English
Pages (from-to)	6697-6701
Number of pages	5
Journal	Analytical Chemistry
Volume	79
Issue number	17
DOIs	https://doi.org/10.1021/ac071062b
State	Published - 1 Sep 2007

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title = "Nanoparticle-enhanced diffraction gratings for ultrasensitive surface plasmon biosensing",

abstract = "Ultrasensitive surface bioaffinity sensors are created by the adsorption of gold nanoparticles onto gold diffraction gratings. An enhanced diffraction obtained in a surface plasmon resonance geometry is observed due to the optical coupling of the planar surface plasmons in the grating to the localized surface plasmons in the gold nanoparticles. As a first example, these nanoparticle grating biosensors are employed to detect unmodified DNA at a concentration of 10 fM.",

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year = "2007",

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AU - Wark, Alastair W.

AU - Hye, Jin Lee

AU - Qavi, Abraham J.

AU - Corn, Robert M.

PY - 2007/9/1

Y1 - 2007/9/1

N2 - Ultrasensitive surface bioaffinity sensors are created by the adsorption of gold nanoparticles onto gold diffraction gratings. An enhanced diffraction obtained in a surface plasmon resonance geometry is observed due to the optical coupling of the planar surface plasmons in the grating to the localized surface plasmons in the gold nanoparticles. As a first example, these nanoparticle grating biosensors are employed to detect unmodified DNA at a concentration of 10 fM.

AB - Ultrasensitive surface bioaffinity sensors are created by the adsorption of gold nanoparticles onto gold diffraction gratings. An enhanced diffraction obtained in a surface plasmon resonance geometry is observed due to the optical coupling of the planar surface plasmons in the grating to the localized surface plasmons in the gold nanoparticles. As a first example, these nanoparticle grating biosensors are employed to detect unmodified DNA at a concentration of 10 fM.

UR - https://www.scopus.com/pages/publications/34548590385

U2 - 10.1021/ac071062b

DO - 10.1021/ac071062b

M3 - Article

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JO - Analytical Chemistry

JF - Analytical Chemistry

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Nanoparticle-enhanced diffraction gratings for ultrasensitive surface plasmon biosensing

Abstract

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