Strain sensors, methods of making same, and applications of same

Biris, Alexandru S.; Trigwell, Steven; Hatfield, Walter

Strain sensors, methods of making same, and applications of same

Patent · Tue Jun 30 04:00:00 EDT 2015

OSTI ID:1187946

Biris, Alexandru S.; Trigwell, Steven; Hatfield, Walter

In one aspect, the present invention relates to a layered structure usable in a strain sensor. In one embodiment, the layered structure has a substrate with a first surface and an opposite, second surface defining a body portion therebetween; and a film of carbon nanotubes deposited on the first surface of the substrate, wherein the film of carbon nanotubes is conductive and characterized with an electrical resistance. In one embodiment, the carbon nanotubes are aligned in a preferential direction. In one embodiment, the carbon nanotubes are formed in a yarn such that any mechanical stress increases their electrical response. In one embodiment, the carbon nanotubes are incorporated into a polymeric scaffold that is attached to the surface of the substrate. In one embodiment, the surfaces of the carbon nanotubes are functionalized such that its electrical conductivity is increased.

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Research Organization:: Board of Trustees of the University of Arkansas, Little Rock, AR (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG36-06GO86072

Assignee:: Board of Trustees of the University of Arkansas (Little Rock, AR)

Patent Number(s):: 9,068,283

Application Number:: 13/662,955

OSTI ID:: 1187946

Country of Publication:: United States

Language:: English

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