Organic vapor detection

Details Organic vapor detection Organic vapor detection

G - Physics

01

N

73/59, 88/77, 88

G01N 21/01 (2006.01)

Patent

CA 1051684

ABSTRACT OF THE DISCLOSURE A device for detecting organic vapors comprising (a) an elongated waveguide having on the surface thereof a sufficient amount of liquid crystal material sensitive to organic vapor to measurably change the light transmitting capability of said waveguide upon contacting said waveguide with said vapor, (b) a light source positioned to transmit light lengthwise through said waveguide, and (c) means for measuring the light exiting from said waveguide. The device is useful in a method for measuring organic vapors comprising to the steps of (a) exposing said waveguide to a gas which may contain organic vapor to which said liquid crystals are sensitive, and (b) transmitting light through said waveguide, and (c) detecting the light transmitted in step (b) as a measure of said organic vapor. Waveguides of the device are separately claimed as a subcombination. - 1 -

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