Starch-iodine films respond to water vapor

Peter J. Skrdla, Neal R. Armstrong, S. Scott Saavedra

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Starch-iodine indicator films were found to have useful spectroscopic properties for the detection of water vapor. The large colorimetric response of these easily prepared films was easily detected by the absorption of 632.8nm HeNe laser light, using a planar integrated optical waveguide (IOW) platform. The detection limit of a prototype sensor was found to be below 5% relative humidity (RH), with response times of the order of seconds.

Original languageEnglish (US)
Pages (from-to)49-52
Number of pages4
JournalAnalytica Chimica Acta
Issue number1
StatePublished - Mar 18 2002


  • Chemical sensor
  • Integrated optical waveguide (IOW)
  • Starch-iodine film
  • Water vapor

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy


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