Patent · US Active

Metallic nanoparticle pressure sensor

US8669952B2 · kind B2 · utility

29Cited by

2References

20Claims

0Family size

Assignee

Sharp Laboratories of America, Inc. · US

Inventors

Akinori Hashimura · Vancouver, US
Liang Tang · Sunnyvale, US
Apostolos T. Voutsas · Vancouver, US

Key dates

Filing date	Jun 9, 2011
Grant date	Mar 11, 2014
Priority date	—
Expiry date	Sep 18, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01L1/20
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An electrical pressure sensor is provided with a method for measuring pressure applied to a sensor surface. The method provides an electrical pressure sensor including a sealed chamber with a top surface, first electrode, second electrode, an elastic polymer medium, and metallic nanoparticles distributed in the elastic polymer medium. When the top surface of the sensor is deformed in response to an applied pressure, the elastic polymer medium is compressed. In response to decreasing the metallic nanoparticle-to-metallic nanoparticle mean distance between metallic nanoparticles, the electrical resistance is decreased between the first and second electrodes through the elastic polymer medium.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.