Self-Powered Motion and Tactile Positioning Based on a Dual Mode Triboelectric Sensor with Charge Accumulating Enclosure for Sports Monitoring
In this work, a dual mode self-powered motion/position sensing strategy was firstly proposed by implementing a Polystyrene-based cylindrical dish-shaped dielectric enclosure into a single electrode-based TENG structure. The enclosure enables position-based variable voltage signals on its surface relative to the TENG electrode due to differences in the electrostatic field, local charge distribution owing to locally induced polarization, overlap area, TENG capacitance, and impedance. After implementing an enclosure, a single-electrode TENG can detect object motion and position in both contact and non-contact modes along parallel and perpendicular directions. The results showed that the TENG can generate similar voltage during contact mode, with improved signal quality and width, and achieves a nearly 5-fold performance enhancement in non-contact operation. The distance and position-dependency of voltage (5.305 V/cm) in radial directions are promising for self-powered tactile perception and shooting performance evaluation in real time.
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