Figure 2.

Temperature monitoring on: a,b) printed circuit boards and c,d) on food items. a) TCR circuit mounted conformably on a PCB board (left) and IR camera recordings of the circuit in OFF (top right) and ON (bottom right) state. Scale bar: 5 mm. b) Comparison of temperature recording between the TCR sensor and the IR camera. c) Packaged frozen fish equipped with a TCR sensor (left) together with IR camera recordings in the frozen (top right) and thawed state (bottom right). Scale bar: 1 cm. d) Temperature profile during defrosting (right).