CPC G01N 27/4071 (2013.01) [C09C 1/56 (2013.01); G01N 27/127 (2013.01); G01N 33/0047 (2013.01); C08K 2003/0831 (2013.01); G01N 27/04 (2013.01)] | 20 Claims |
1. A sensor comprising:
a sensing element comprising a polymer, carbon black, and gold nanoparticles grafted onto the carbon black, wherein the gold nanoparticles grafted onto the carbon black are attached thereto via chemical bonds, a ratio of a weight of the gold nanoparticles to a weight of the carbon black is greater than or equal to 0.25 and less than or equal to 0.5, and a ratio of the weight of the gold nanoparticles to a weight of the polymer is greater than or equal to 0.005 and less than or equal to 0.02; and
a plurality of electrodes electrically coupled to the sensing element, the plurality of electrodes configured to sense a change in a resistivity of the sensing element upon exposure to an analyte.
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