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Sensors for gas dosimetry

  • US 9,494,541 B2
  • Filed: 07/05/2012
  • Issued: 11/15/2016
  • Est. Priority Date: 07/05/2012
  • Status: Active Grant
First Claim
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1. A gas dosimeter, comprising:

  • a housing configured with an opening to admit an analyte; and

    a multivariate sensor disposed in the housing, wherein the sensor is configured to determine a concentration of the analyte over time, the multivariate sensor comprising an irreversible sensing material, wherein electrical properties of the irreversible sensing material are configured to change irreversibly upon exposure to the analyte, wherein the irreversible sensing material comprises an inactive matrix and an active additive, wherein the active additive comprises an active polymer and a dopant, wherein the dopant is configured to react with the analyte and form a reaction product upon exposure to the analyte, and wherein the reaction product is configured to react with the active polymer to irreversibly change the electrical properties of the irreversible sensing material.

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