Tekscan, Inc.

Julian Hou Lima

Thomas Papakostas

A pressure sensitive device that provides a stable response to measure an applied force at temperatures greater than 150&#xb0; F. (about 66&#xb0; C.) is disclosed. The pressure sensitive device can have a conductivity of about 0.01 &#x3bc;S to about 1300 &#x3bc;S and a sensitivity of about 0.01 &#x3bc;S/lb to about 300 &#x3bc;S/lb (about 0.02 &#x3bc;S/kg to about 660 &#x3bc;S/kg) at about a temperature range of about &#x2212;50&#xb0; F. to over about 400&#xb0; F. or 420&#xb0; F. (about &#x2212;45&#xb0; C. to over about 205&#xb0; C. or 216&#xb0; C.). The pressure sensitive device can have a substrate of polyimide, conductive leads of silver dispersed in a polyhydroxy ether crosslinked with melamine formaldehyde, and a pressure sensitive layer of carbon nanoparticles dispersed in cured polyamic acid forming a polyimide.

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Brookline, MA, United States of America

Julian Hou Lima