Fig. 2: Temperature response and pressure sensitivity of 3D pressure sensors with Wheatstone full-bridge and quarter-bridge designs. | npj Flexible Electronics

Fig. 2: Temperature response and pressure sensitivity of 3D pressure sensors with Wheatstone full-bridge and quarter-bridge designs.

From: Soft, full Wheatstone bridge 3D pressure sensors for cardiovascular monitoring

Fig. 2: Temperature response and pressure sensitivity of 3D pressure sensors with Wheatstone full-bridge and quarter-bridge designs.The alternative text for this image may have been generated using AI.

a Exploded view schematic illustration and photograph of a 3D pressure sensor. Scale bar, 10 mm. b Circuit diagram of the full-bridge (FB) and quarter-bridge (QB) sensors; the FB consists of four strain gauges (R1, R2, R3, R4) and the QB consists of one strain gauge (R4) and three temperature-independent commercial resistors (Rc). c Fractional change in ADC values as a function of temperature for the FB and QB sensors. d Fractional change in ADC values as a function of normal pressure loading for the FB and QB sensors. e Schematic illustration of a benchtop setup for testing the effects of temperature on the measurements. Force measurement stands for dynamic mechanical analysis. f Fractional change in pressure values during 12 repeated cycles of pressure loading and unloading within 60 s. g Fractional change in pressure values during constant pressure loading for 10 s.

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