SBIR 95-1 SOLICITATION
This SBIR Phase I project will develop unique fiber optic/zeolite-
based sensors (optrodes) to monitor environmental NH3 for NASA's
plant growth facilities. The inherent thermal and chemical
stability of the zeolite films will significantly improve the
optrodes' long term stability, while the higher permeation rate of
gases through the zeolite films (compared to conventional polymer
coatings) will allow faster response times.
While the potential of zeolite-based optical sensors has long been
realized, they have not been commercialized, because there has been
no way to fabricate adherent, defect-free zeolite films. TDA
Research, Inc. (TDA) has recently developed methods to prepare
defect-free ZSM-5 zeolite films on single crystal silica. In Phase
I, TDA will use these methods to prepare a zeolite-coated fiber,
characterize the zeolite film, and demonstrate proof-of-concept by
using this optrode to measure the concentration of ammonia in a gas
mixture. In Phase II, if justified, we will develop a complete
sensor package and determine its sensitivity, dynamic range, and
durability over time and in a range of operating conditions.
Potential Commercial Applications:
Successful development of procedures for preparation of zeolite
film based optrodes allows development of unique sensor
architectures and expands the number of applications where fiber
optic sensors can be used.
Name and Address of Offeror:
TDA Research, Inc.
12345 W. 52nd Avenue
Wheat Ridge, CO 80033
Small Business Innovation Research Program (SBIR) &
Small Business Technology Transfer Program (STTR) Programs
Electronic Management System (EMS)
National Aeronautics and Space Administration (NASA)
The SBIR/STTR EMS site is maintained by Steve
Hu, Hughes STX.
For comments and questions, contact
Updated: Feb. 7, 1996