Fig. 5: Performance testing of the HFS. | Microsystems & Nanoengineering

Fig. 5: Performance testing of the HFS.

From: Highly sensitive flexible heat flux sensor based on a microhole array for ultralow to high temperatures

Fig. 5

a HFS calibration device designed based on Fourier’s law of heat conductivity. b Physical diagram of the calibration, including the heat source and two developed HFSs. c Calibration curves of HFSs. d HFS output voltage under 30 heat flux rise-fall cycles. e The HFS was bent to different radii with curvatures from 3 cm to 10 cm. f Resistance of the HFS with different curvatures. g Schematic diagram of the sensor being repeatedly stretched and bent. h Output voltage of the sensor under bending and stretching. i Long-term test of the HFS. j Thermoelectric output of the HFS under different heating powers. When the power is 80 W, the temperature is close to the limit of the sensor

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