Patent · US Active

Capacitive sensor for organic chemicals comprising an elastomer and high dielectric materials with titanate

US8303897B2 · kind B2 · utility

0Cited by
19References
22Claims
0Family size

Inventors

Key dates

Filing dateFeb 28, 2011
Grant dateNov 6, 2012
Priority date—
Expiry dateFeb 28, 2031

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N27/221
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An organic chemical sensor includes a dielectric core that comprises an elastomer and a high dielectric constant material. The elastomer absorbs an organic chemical to be sensed. An electrically conductive layer is secured to a first side of the dielectric core. A permeable conductive layer is secured to a second side of the dielectric core. The permeable conductive layer is electrically conductive and permeable to the organic chemical to be sensed. The absorption of the organic chemical to be sensed by the elastomeric layer causes a decrease in the capacitance between the electrically conductive layer and the permeable conductive layer.

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