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Proceedings Paper

Fiber optic sensors based on time-release polymers
Author(s): Steven M. Barnard; David R. Walt
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Paper Abstract

Fiber-optic sensors based on a controlled-release polymer provide sustained release of indicating reagents over long periods. This technique allows irreversible chemistries to be used in the design of sensors for continuous measurements. The first reported sensor used 8-hydroxypyrene- 1 ,3,6-trisulfonic acid and sulforhodamine 640 to measure pH continuously for three months in the range of 5.5 to 8.0 with a precision units. The sensor reported in this paper is based on a fluorescence energy transfer immunoassay. The sensor was cycled through different concentrations of antigen continuously for 30 hours. Although the sensor was not optimized, the data indicates the viability of the technique.

Paper Details

Date Published: 1 July 1990
PDF: 6 pages
Proc. SPIE 1201, Optical Fibers in Medicine V, (1 July 1990); doi: 10.1117/12.17560
Show Author Affiliations
Steven M. Barnard, Tufts Univ. (United States)
David R. Walt, Tufts Univ. (United States)

Published in SPIE Proceedings Vol. 1201:
Optical Fibers in Medicine V
Abraham Katzir, Editor(s)

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