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Fabrication of Colorimetric Fiber Optic Hydrazine Sensors

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
1995 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
10960 N Stallard Place Tucson, AZ 85737-9527
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 1995
Title: Fabrication of Colorimetric Fiber Optic Hydrazine Sensors
Agency / Branch: DOD / USAF
Contract: N/A
Award Amount: $68,429.00


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.

Principal Investigator:

Scott R. Lyon

Business Contact:

Small Business Information at Submission:

Sigma Labs, Inc.
10960 North Stallard Place Tucson, AZ 85737

EIN/Tax ID: 860700419
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No