TITLE

A poly(dimethylsiloxane) based prism for surface plasmon resonance imaging system and its application for gas detection

AUTHOR(S)
Zhang, L. L.; Chen, X.; Sun, J. H.; Cai, H. Y.; Li, H.; Chao, Y. P.; Cui, D. F.
PUB. DATE
March 2013
SOURCE
Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p035001
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper presents a surface plasmon resonance (SPR) imaging system based on a low-cost, convenient poly(dimethylsiloxane) (PDMS) prism featured with a close contact with the gold film. Compared to conventional glass prism, both numerical simulations and experimental studies indicated a deeper but wider absorption peak with a higher coupling angle for the PDMS based prism. System repeatability was quantified by the cycled detection of helium and air, with the effect of the flow rate investigated. Furthermore, five types of gases (nitrogen, air, oxygen, hydrogen, and helium) were detected and differentiated by the SPR system, with a calculated sensitivity of 5 × 10-6 RIU.
ACCESSION #
86446705

 

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