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Enhancement of Sensitivity of the Solution-Phase Localized Surface Plasmon by a Nanostructured Substrate

Published online by Cambridge University Press:  18 May 2016

Shengjie Zhai  and
Hui Zhao
Shengjie Zhai
Affiliation:
Department of Mechanical Engineering University of Nevada, Las Vegas, NV, 89154
Hui Zhao*
Affiliation:
Department of Mechanical Engineering University of Nevada, Las Vegas, NV, 89154
*
1 All correspondence should be directed to this author (hui.zhao@unlv.edu).
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Abstract

We describe a simple and inexpensive method to enhance the sensitivity or improve the detection limit of solution-phase localized surface plasmon (LSPR) sensors of metallic nanoparticles. The substrate surface contains metallic nanostructures which are replicated from DVD disks via the standard soft lithography. By mixing BSA molecules with nanoparticle solution, we demonstrate that the wavelength shift due to the absorption of BSA molecules on nanoparticle surfaces is amplified by more than an order of magnitude in comparison to that over a smooth flat surface.

Keywords

nanostructuresensornanoscale
Type
Articles
Information
MRS Advances , Volume 1 , Issue 28: Nanotechnology , 2016 , pp. 2059 - 2064
Copyright
Copyright © Materials Research Society 2016 

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