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A pixelated energy-harvesting array was formed by integrating a PVDF film with dual-gate thin-film transistors (TFT). Finite element method was used to elaborate the displacement and corresponding charges generated by each pixel upon applying forces. The response of underneath TFT was also simulated and an experimental study was conducted to demonstrate the power scavenged from 1-Hz and 10 kN/m2 dynamic...
In this work, we report on a novel approach to tactile sensing through an integrative sensor combing a dualgate thin-film transistor (TFT) with a piezoelectric film. By sensing the drain current change in the subthreshold region of the TFT upon applied force, the sensor can be very sensitive. Both simulation and experimental results have led us to expect an exponential change of the drain current...
This letter reports on an electronic device that can work as a tactile force sensor with a high spatial resolution and sensitivity. It integrates a thin-film piezoelectric sensor with a thin-film transistor (TFT) to form a dual-gate force-sensitive TFT. The piezoelectric sensor acts as a top-sensing terminal, which is charge-gated. An analytical model of the device is given to elaborate how the output...
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