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Poole-frenkel piezoconductive element and sensor

United States Patent

August 3, 2004
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A new class of highly sensitive piezoconductive strain sensor elements and sensors has been invented. The new elements function under conditions such that electrical conductivity is dominated by Poole-Frenkel transport. A substantial piezoconductive effect appears in this regime, allowing the new sensors to exhibit sensitivity to applied strain as much as two orders of magnitude in excess of prior art sensors based on doped silicon.
Habermehl; Scott D. (Corrales, NM)
Sandia Corporation (Albuquerque, NM)
10/ 101,450
March 19, 2002
GOVERNMENT RIGHTS This invention was made with Government support under Contract DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.