Enhanced printed temperature sensors on flexible substrate
The integration of the carbon black and a metallic oxide in a whetstone bridge enhanced of the sensitivity. The use of a PEN substrate gives a flexible and a conformal structure. The annealing of the sensitive inks at 130C gives a good and stable electrical characteristics. Treating the ATO with an oxygen plasma enhanced its TCR and then the sensitivity of the temperature sensor. The passivation of the temperature devices by using a fluoropolymer prevents from the humidity.
temperature sensors flexible substrate ptc ntc printed electronics