Development of a prototype optical hydrogen gas sensor using a getter-doped polymer transducer for monitoring cumulative exposure: Preliminary results

Ward Small IV, Duncan J. Maitland, Thomas S. Wilson, Jane P. Bearinger, Stephan A. Letts, James E. Trebes

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

A novel prototype optical sensor for monitoring cumulative hydrogen gas exposure was fabricated and evaluated. Chemical-to-optical transduction was accomplished by detecting the intensity of 670 nm laser light transmitted through a hydrogen getter-doped polymer film mounted at the end of an optical fiber; the transmittance of the composite film increased with uptake of hydrogen by the embedded getter. The composite film consisted of the hydrogen getter 1,4-bis(phenylethynyl)benzene, also known as DEB, with carbon-supported palladium catalyst embedded in silicone elastomer. Because the change in transmittance was irreversible and occurred continuously as the getter captured hydrogen, the sensor behaved like a dosimeter, providing a unique indication of the cumulative gas exposure.

Original languageEnglish (US)
Pages (from-to)375-379
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume139
Issue number2
DOIs
StatePublished - Jun 4 2009
Externally publishedYes

Keywords

  • Gas sensor
  • Hydrogen getter
  • Optical fiber
  • Polymer

ASJC Scopus subject areas

  • Instrumentation
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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