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Proceedings Paper

Re-thinking surface enhance Raman spectroscopy (SERS) sensors with a systems perspective
Author(s): Ian M. White
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Paper Abstract

While surface enhanced Raman spectroscopy (SERS) may not compete with the standard central lab approaches for chemical and biological sensing, SERS may have the potential to provide unique capabilities for analytics away from the central lab. Raman spectrometers have evolved from benchtop systems to high-performing handheld instruments that are compatible with analysis of samples in the field. However, for SERS to truly succeed as a “point-of-sample” analytical technique, the SERS sensor must fit the needs of analysis in the field, including little or no sample preparation, minimal peripheral equipment, and ease of use. Traditional plasmonically-active rigid devices do not meet these requirements. Even microfluidic SERS devices generally are not compatible with point-of-sample analysis, as the "world-to-chip" interface presents challenges, and peripheral equipment is generally required.

In this review we will discuss the advances in plasmonic substrates fabricated on porous membranes, leading to SERS sensors that can collect samples via swabbing or dipping, clean up samples through separation, concentrate analytes by lateral flow focusing, and avoid the need for peripheral equipment. In particular, we will focus on inkjet-fabricated devices, which may present the best opportunity for scale-up via roll-to-roll manufacturing. We will also discuss the directions that flexible SERS sensors are moving the field, such as simple fabrication techniques, new support materials, SERS swabs, and SERS-active tapes and films.

Paper Details

Date Published: 23 February 2017
PDF: 5 pages
Proc. SPIE 10081, Frontiers in Biological Detection: From Nanosensors to Systems IX, 1008102 (23 February 2017); doi: 10.1117/12.2252557
Show Author Affiliations
Ian M. White, Univ. of Maryland, College Park (United States)

Published in SPIE Proceedings Vol. 10081:
Frontiers in Biological Detection: From Nanosensors to Systems IX
Amos Danielli; Benjamin L. Miller; Sharon M. Weiss, Editor(s)

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