Accession Number : ADA130629

Title :   Optical Waveguide Gas Sensors.

Descriptive Note : Interim technical rept. 1 Nov 82-31 May 83,


Personal Author(s) : Giuliani,J F ; Wohltjen,H ; Jarvis,N L

PDF Url : ADA130629

Report Date : 13 Jul 1983

Pagination or Media Count : 15

Abstract : The discoveries of solid organic film coatings exhibiting color change reactions to specific vapors have made it possible to detect weak surface chemical reactions at the film-vapor interface by means of a multiple reflecting optical probe. A brief review of total multiple reflection and the application of two prototype devices built at NRL for the detection of low concentrations of ammonia and organophosphonate vapors is presented. Preliminary data characterizing both devices with regards to vapor response, reversibility, etc., will be discussed. Several design modification are suggested to improve our devices. (Author)

Descriptors :   *Optical waveguides, *Gas detectors, *Coatings, Surfaces, Organic coatings, Films, Reflection, Vapors, Ammonia, Organometallic compounds, Phosphonates

Subject Categories : Electrical and Electronic Equipment
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE