Figure 1.
Fabrication process of the temperature sensors: (a) polyethylene terephthalate (PET) cleaning with acetone, alcohol and deionized (DI) water; (b) O2 plasma etching; (c) printing two conductive thin wires; (d) the fabrication of sensitive layer using air-spray coating; (e) the fabrication process of insulating layer; (f) the vertical view of the temperature sensor; (g) the diagram on the left is a dimensional view of the sensor, including the size of the sensitive area, the overall size and the thickness. The diagram on the left shows the good flexibility of the sensor; (h) One of the possible applications of the temperature sensor.