Plasmon-induced heating effect in surface enhanced Raman scattering

Kiang Wei Kho; Ze Xiang Shen; Zhou Lei; Frank Watt; Kee Chee Soo; Malini Olivo

doi:10.1117/12.651223

28 February 2006 Plasmon-induced heating effect in surface enhanced Raman scattering

Kiang Wei Kho, Ze Xiang Shen, Zhou Lei, Frank Watt, Kee Chee Soo, Malini Olivo

Proceedings Volume 6095, Nanobiophotonics and Biomedical Applications III; 609508 (2006) https://doi.org/10.1117/12.651223
Event: SPIE BiOS, 2006, San Jose, California, United States

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.

Citation Download Citation

Kiang Wei Kho, Ze Xiang Shen, Zhou Lei, Frank Watt, Kee Chee Soo, and Malini Olivo "Plasmon-induced heating effect in surface enhanced Raman scattering", Proc. SPIE 6095, Nanobiophotonics and Biomedical Applications III, 609508 (28 February 2006); https://doi.org/10.1117/12.651223

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