SBIR 95-1 SOLICITATION
NEW PROCESSING, MATERIALS, AND FUNDAMENTAL STRUCTURES FOR PIEZOELECTRIC DEVICES
There is a continuing need for increased sensitivity in acoustic sensors and
senders and an increasing need for lower cost devices. Of particular
importance is acoustic impedance matching in underwater and medical
applications. Recent efforts have demonstrated that polymer/ceramic composites
have specific advantages including the hydrophone figure-of-merit (ghdh).
Sigma Labs has developed thin and thick film polymer technology into a high
rate, industrially oriented process that can utilize composite materials as
well. Therefore we propose to evaluate newly developed, process compatible
polymers and polymer/ceramic composites for piezoelectric activity. A
particular advantage of the transition to this relatively new processing
technology is the ability to pole monomeric or ceramic particle dipoles while
the monomers are in a liquid phase. Subsequently, the monomers can be cured
into a polymer matrix with the poling intact. Monomers can be specifically
designed and tailored to have a maximum piezoelectric response by themselves
or to maximize compatibility with the more piezoelectrically active ceramic
powders. Acoustic impedance matching with water can be maximized by
manipulating the glass transition temperature of the polymer. Compatibility
with the Sigma Labs processing technology ensures low cost processing of large
scale products including heretofore unavailable geometries based on multilayer
technology. We propose an initial feasibility study to demonstrate liquid
phase poling in monomers or monomer/ceramic slurries.
Potential Commercial Applications:
The end result of a successful program will be low cost but highly sensitive
piezoelectric materials that are acoustically matched to a particular medium.
include acoustic sensors and transmitters
for underwater surveillance and active noise suppression. Commercial markets
include medical technology, vibration, acceleration and stress sensing,
pyroelectric applications, and switches including keypads.
Name and Address of Offeror:
Sigma Labs, Inc., 10960 N. Stallard Place, Tucson, AZ 85737
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