Abstract
An interface was designed to independently measure two palladium nanowires on one substrate to decrease the cross sensitivity for temperature. The circuit was evaluated in a test chamber where temperature, humidity and hydrogen concentration could be controlled. The palladium sensors showed no response to humidity s as high as 80%, but did show an expected response to temperature.One of the nanowires was covered with a 2-Hydroxyethyl methacrylate based compound to prevent hydrogen from reaching the wire. The compound was dried by a UV source and tested in chamber for comparison with previous measurements. The results shows that temperature effects can be reduced by a digital signal processing algorithm without measuring temperature near or at the substrate. With this method no additional temperature probes are necessary making this solution a candidate for ultra low power wireless applications.
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