Fabrication of Colorimetric Fiber Optic Hydrazine Sensors

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 28031
Amount: $68,429.00
Phase: Phase I
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
10960 North Stallard Place, Tucson, AZ, 85737
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Scott R. Lyon
 (602) 575-8013
Business Contact
Phone: () -
Research Institution
Hydrazine is a highly toxic compound that is widely used as a rocket fuel in U.S. space programs. Since very low concentrations of hydrazine are considered hazardous, there is need for sensors that are robust, cheap, sensitive and selective. Sigma Labs proposes a low cost manufacturing method for fiber optic sensors with reactive, colorimetric claddings. The coating process is characterized by a plasma cleaning and activation, followed by vapor deposition and curing of the reactive coating. A variety of reagents can be incorporated into the cladding layer. The reagents can be incorporated either as a guest or as a chemically bound reagent in a polymer matrix. A secondary, non-reactive layer can also be deposited during the process. In addition to providing increased durability and handling properties, this secondary layer may be used as a barrier layer for interfering compounds. Phase I of this project will focus on coating optical fibers with a reactive cladding that uses p-Dimethylaminobenzaldehyde as the reactive compound. An acrylate derivative of p-Dimethylaminobezalddehyde will also be synthesized so that comparisons can be made between the "guest-host" claddings and the chemically bound claddings. The fiber optic sensors will be tested in an absorbance mode and a phase-modulated mode.

* Information listed above is at the time of submission. *

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