Optical fiber sensing of human skin emanations

S. W. Lee, T. Wang, R. Selyanchyn, S. Korposh, S. W. James

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


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.

Original languageEnglish
Title of host publicationFifth Asia-Pacific Optical Sensors Conference, APOS 2015
EditorsByoungho Lee, Yunjiang Rao, Sang Bae Lee
ISBN (Electronic)9781628418651
Publication statusPublished - 2015
Externally publishedYes
Event5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of
Duration: May 20 2015May 22 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference5th Asia-Pacific Optical Sensors Conference, APOS 2015
Country/TerritoryKorea, Republic of

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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