Abstract
Transparent stretchable wearable hybrid nano-generators present great opportunities in motion sensing, motion monitoring, and human-computer interaction. Herein, we report a piezoelectric-triboelectric sport sensor (PTSS) which is composed of TENG, PENG, and a flexible transparent stretchable self-healing hydrogel electrode. The piezoelectric effect and the triboelectric effect are coupled by a contact separation mode. According to this effect, the PTSS shows a wide monitoring range. It can be used to monitor human multi-dimensional motions such as bend, twist, and rotate motions, including the screw pull motion of table tennis and the 301C skill of diving. In addition, the flexible transparent stretchable self-healing hydrogel is used as the electrode, which can meet most of the motion and sensing requirements and presents the characteristics of high flexibility, high transparency, high stretchability, and self-healing behavior. The whole sensing system can transmit signals through Bluetooth devices. The flexible, transparent, and stretchable wearable hybrid nanogenerator can be used as a wearable motion monitoring sensor, which provides a new strategy for the sports field, motion monitoring, and human-computer interaction.
Highlights
The Chinese diving team won gold medals in the men’s and women’s tenmeter platform events in the Tokyo Olympic Games in 2020
Diving belongs to the category of difficult and beautiful events The motions of diving are fast and subtle; these motions cannot be captured and analyzed by sports monitoring equipment
AM, MBA, Ammonium persulphate (APS), and TMED are mixed in a certain proportion to form a hydrogel electrode
Summary
The Chinese diving team won gold (silver) medals in the men’s and women’s tenmeter platform events in the Tokyo Olympic Games in 2020. This excellent performance is related to “Rip entry” technology. Athletes’ entry into the water is a fluid-solid coupling problem [1,2,3,4] This technology helps athletes to reduce the impact force when their hands enter into the water in a square shape. Athletes must change their hands into a square shape immediately before entering the water [7]. Athletes’ palms need to remain in a square shape before entering the water.
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