US 12,461,051 B2
Gas sensor and method of manufacture
Tolga Aytug, Oak Ridge, TN (US); Christine Fisher, Oak Ridge, TN (US); Pooran C. Joshi, Oak Ridge, TN (US); and Robert J. Warmack, Oak Ridge, TN (US)
Assigned to UT-BATTELLE, LLC, Oak Ridge, TN (US)
Filed by UT-Battelle, LLC, Oak Ridge, TN (US)
Filed on Mar. 8, 2023, as Appl. No. 18/118,920.
Claims priority of provisional application 63/317,615, filed on Mar. 8, 2022.
Prior Publication US 2023/0288362 A1, Sep. 14, 2023
Int. Cl. G01N 27/12 (2006.01); B41M 3/00 (2006.01)
CPC G01N 27/127 (2013.01) [B41M 3/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for manufacturing a gas sensor, the method comprising:
providing a polyimide substrate;
aerosol-jet printing a pair of conductive electrodes on the polyimide substrate, each of the pair of conductive electrodes including a parallel array of interleaved fingers that are spaced apart from each other by a gap, the pair of conductive electrodes being formed from a metal including at least one of silver, gold, platinum, and palladium;
forming a mixture containing a plurality of polyaniline nanoparticles and a solvent and thereafter sonicating the mixture; and
aerosol-jet printing the mixture onto at least a portion the polyimide substrate and the pair of conductive electrodes to form a sensing film, such that the sensing film overlies the pair of conductive electrodes and bridges a gap between the pair of conductive electrodes, wherein the sensing film includes the plurality of polyaniline nanoparticles.