Abstract
Self-powered sensorsSelf-powered sensor can be generally realized by using the actively generated electrical signals in response to a stimulation/triggering from the ambient environment. Owing to the low-frequency sensitivity of TENG, it is ideally suited for sensing vibration and biological signals related to human health. The magnitude, frequency, number of periods and fine details in the voltage and current signals are directly determined by input mechanical behaviors. The voltage signal is a measure of the vibration amplitude, and the current signal characterizes the dynamic processes of the vibration. This chapter systematically presents the applications of TENG for detection of sound waves, heat beating behavior and cardiac signals.
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