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Proceedings Paper

Portable SERS sensor for malachite green and other small dye molecules
Author(s): Suyan Qiu; Fusheng Zhao; Jingting Li; Wei-Chuan Shih
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Paper Abstract

Sensitive detection of specific chemicals on site can be extremely powerful in many fields. Owing to its molecular fingerprinting capability, surface-enhanced Raman scattering has been one of the technological contenders. In this paper, we describe the novel use of DNA topological nanostructure on nanoporous gold nanoparticle (NPG-NP) array chip for chemical sensing. NPG-NP features large surface area and high-density plasmonic field enhancement known as “hotspots”. Hence, NPG-NP array chip has found many applications in nanoplasmonic sensor development. This technique can provide novel label-free molecular sensing capability and enables high sensitivity and specificity detection using a portable Raman spectrometer.

Paper Details

Date Published: 17 February 2017
PDF: 5 pages
Proc. SPIE 10072, Optical Diagnostics and Sensing XVII: Toward Point-of-Care Diagnostics, 1007202 (17 February 2017); doi: 10.1117/12.2252559
Show Author Affiliations
Suyan Qiu, Jiangxi Academy of Agricultural Sciences (China)
Univ. of Houston (United States)
Fusheng Zhao, Univ. of Houston (United States)
Jingting Li, Univ. of Houston (United States)
Wei-Chuan Shih, Univ. of Houston (United States)

Published in SPIE Proceedings Vol. 10072:
Optical Diagnostics and Sensing XVII: Toward Point-of-Care Diagnostics
Gerard L. Coté, Editor(s)

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