Optical analytical device, waveguide and method

Details Optical analytical device, waveguide and method Optical analytical device, waveguide and method

1976-09-17

1977-09-27

Marantz, Sidney

Chemistry: physical processes

Physical processes

Crystallization

23230B, 23253R, 250227, 252408, 350 96R, 356209, 428392, 424 12, G01N 2122, G01N 3316

Patent

active

040508951

ABSTRACT:
A device for detecting a first material comprising (a) a waveguide having on a peripheral surface of the waveguide a second material which on contacting the first material selectively combines with the first material to measurably change the light transmitting capabilities of the waveguide, (b) a light source positioned to transmit light into the waveguide, and (c) means for measuring the light exiting from the waveguide. The waveguide described in the previous sentence is a new article of manufacture. The device is useful in a method for detecting a first material comprising the steps of (a) exposing a waveguide having on a peripheral surface of the waveguide a second material to an unknown material which may contain the first material, and second material upon being contacted by the first material selectively combines with the first material to measurably change the light transmitting capabilities of the waveguide; (b) transmitting light through the waveguide after exposure in step (a); and, (c) detecting the light transmitted in step (b) as a measure of the first material. The device and method can be used in either qualitative or quantitative analysis.

REFERENCES:
patent: 2666355 (1954-01-01), Trurnit
patent: 3282149 (1966-11-01), Shaw
patent: 3431411 (1969-03-01), Harrick
patent: 3513319 (1970-05-01), Broerman
patent: 3647406 (1972-03-01), Fisher
patent: 3770380 (1973-11-01), Smith
patent: 3904373 (1975-09-01), Harper

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