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Methods of minimizing temperature cross-sensitivity in vapor sensors and compositions therefor

  • US 20070095678A1
  • Filed: 11/01/2005
  • Published: 05/03/2007
  • Est. Priority Date: 11/01/2005
  • Status: Active Grant
First Claim
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1. A method for making a conductometric sensor having a reduced cross-sensitivity to temperature, the method comprising:

  • combining materials for a sensor matrix comprising a polymer resin, a first species comprising a first conductive particle, and a second species, wherein at least one of said polymer resin and said first species has one of a positive or a negative first temperature coefficient of resistance associated therewith, and said second species has a second temperature coefficient of resistance, wherein said second temperature coefficient of resistance is opposite to that of said first temperature coefficient of resistance; and

    creating a sensor matrix comprising said polymer resin, said first species and said second species, wherein said sensor exhibits a change in resistance when exposed to one or more target analytes;

    whereby said matrix exhibits a reduced change in resistance when exposed to variations in temperature.

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