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. 2019 Jul 23;19(14):3241. doi: 10.3390/s19143241

Figure 1.

Figure 1

(a) Cross-sectional schematic illustration of a piezoelectric-transducer-gated thin-film transistor (PTGTFT) where a PVDF transducer is connected to a FIN-shaped a-Si:H piezoelectric transducer and a dual-gate thin-film transistor (DG-TFT); (b) equivalent circuit diagram of respiration monitoring sensor system composed of a PTGTFT, low-power analog front end (AFE) and conventional data acquisition module (MSP430F149); and (c) photo of the experimental setup for measuring the respiration rhythm signal by the proposed sensor system.