Document Type

Patent

Patent Number

US Patent 5,708,957

Patent agency

United States Patent and Trademark Office

Publication Date

1-13-1998

Assignee

University of Iowa Research Foundation (Iowa City, IA, US)

Application Number

08/597,509

Date Filed

1996-02-02

Total Pages

12 pages

Abstract

An optical sensor is disclosed which uses a radioluminescent light source to supply the incident radiation for detecting a selected substance in a test medium. The radioluminescent source includes a beta emitting radio isotope which energizes a co-immobilized luminophore to release light in a given wavelength for a chemical sensor operation. The radioluminescent source is coupled with a sensing matrix for detecting and quantifying the analyte of interest. The sensing matrix produces a characteristic signal based on either absorbance or fluorescence which varies according to the concentration of the selected analyte in the sample. A photodetector measures the resulting optical signal from which the analyte concentration is determined.

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URL

https://ir.uiowa.edu/patents/175