Nanoparticle-enhanced diffraction gratings for ultrasensitive surface plasmon biosensing

Wark, A.W. and Lee, Hye Jin and Qavi, A.J. and Corn, R.M. (2007) Nanoparticle-enhanced diffraction gratings for ultrasensitive surface plasmon biosensing. Analytical Chemistry, 79 (17). pp. 6697-6701. ISSN 0003-2700 (https://doi.org/10.1021/ac071062b)

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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• Item metadata

  Item type:	Article
  ID code:	9933
  Dates:	Date Event 3 August 2007 Published
  Subjects:	Science > Chemistry
  Department:	Faculty of Science > Pure and Applied Chemistry
  Depositing user:	Strathprints Administrator
  Date deposited:	04 Dec 2011 15:49
  Last modified:	08 Apr 2024 16:52
  URI:	https://strathprints.strath.ac.uk/id/eprint/9933