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Proceedings Paper

Optical fiber sensing of human skin emanations
Author(s): S.-W. Lee; T. Wang; R. Selyanchyn; S. Korposh; S. W. James
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Paper Abstract

An evanescent-wave optical fibre sensor modified with tetrakis(4-sulfophenyl)porphine (TSPP) and poly(allylamine hydrochloride) (PAH) bilayers using an layer-by-layer (LbL) approach was tested to measure the gas emitted from human skin. Optical intensity changes at different wavelengths in the transmission spectrum of the porphyrin-based film were induced by the human skin gas and measured as sensor response. Influence of relative humidity, which can be a major interference to sensor response, was significantly different when compared to the influence of skin emanations. Responses of the current optical sensor system could be considered as composite sensor array, where different optical wavelengths act as channels that have selective response to specific volatile compounds. Data obtained from the sensor system was analyzed through principal component analysis (PCA). This approach enabled to distinguish skin odors of different people and their altered physiological conditions after alcohol consumption.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96551K (1 July 2015); doi: 10.1117/12.2184411
Show Author Affiliations
S.-W. Lee, Univ. of Kitakyushu (Japan)
T. Wang, Univ. of Kitakyushu (Japan)
R. Selyanchyn, Univ. of Kitakyushu (Japan)
S. Korposh, The Univ. of Nottingham (United Kingdom)
S. W. James, Cranfield Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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