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Proceedings Paper

Plasmon-induced heating effect in surface enhanced Raman scattering
Author(s): Kiang Wei Kho; Ze Xiang Shen; Zhou Lei; Frank Watt; Kee Chee Soo; Malini Olivo
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Paper Abstract

Surface enhanced Raman spectroscopy (SERS) discovered some 30 years ago has gained popularity as a powerful analytical tool for developing chemo- and bio-sensing. The combination of SERS with the microfluidics technology can provide a miniaturized and portable device for bio-fluid analysis. However, as will be pointed out in this study, heat generated in a SERS-active substrate as a result of laser-induced plasmon resonance can unfavorably affect the sensitivity of a SERS-based microfluidic device. We will show that the plasmon-induced heat associated with SERS can significantly reduce the signal strength from the analyte under certain circumstances, and show heat-induced morphological changes in the SERS-active substrate as a primary cause of the observed signal changes. This study indicates that sufficient heat dissipation is crucial for the proper working of a SERS-based microfluidic device.

Paper Details

Date Published: 28 February 2006
PDF: 9 pages
Proc. SPIE 6095, Nanobiophotonics and Biomedical Applications III, 609508 (28 February 2006); doi: 10.1117/12.651223
Show Author Affiliations
Kiang Wei Kho, National Cancer Ctr. (Singapore)
National Univ. of Singapore (Singapore)
Ze Xiang Shen, Nanyang Technological Univ. of Singapore (Singapore)
Zhou Lei, Singapore Eye Research Institute (Singapore)
Frank Watt, National Univ. of Singapore (Singapore)
Kee Chee Soo, National Cancer Ctr. (Singapore)
Malini Olivo, National Cancer Ctr. (Singapore)

Published in SPIE Proceedings Vol. 6095:
Nanobiophotonics and Biomedical Applications III
Alexander N. Cartwright; Dan V. Nicolau, Editor(s)

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