![]() When two different material layers produce relative motion, the two materials have different electron binding abilities, where one material inevitably loses electrons and the other material gains electrons. The basic working principle of a triboelectric nanogenerator (TENG) is to generate charges on a material surface by bringing two different friction materials into contact with each other to generate relative motion. When two objects rub against each other, one object loses electrons, while the other object gains electrons. The triboelectricity phenomenon has a history that dates back more than 2000 years. Lastly, we summarize the current research status of nanogenerators, analyze and suggest future application fields, and summarize the main points of material selection. Therefore, for different application scenarios, the design methods of the TENG play an important role in its performance, and a reasonable selection of preparation materials and design methods can greatly improve the work efficiency of the TENG. To improve TENG performance, the friction layer material must be suitable. The friction layer of the TENG can be made of a variety of materials such as polymers, metals, and inorganic materials, and among these, polytetrafluoroethylene (PTFE) and polydimethylsiloxane (PDMS) are the most popular materials. This article first summarizes the working mode and basic theory of TENGs, then reviews the TENG modules used in AR and VR devices, and finally summarizes the material selection and design methods used for TENG preparation. As a result, TENGs are the most popular power supplies for AR and VR products. Compared to traditional power sources, triboelectric nanogenerators (TENGs) are gradually being used for energy harvesting in self-powered sensing technology such as wearable flexible electronics, including AR and VR devices due to their small size, high conversion efficiency, and low energy consumption. As a result, the power supplies of these electronic devices have attracted more attention from scientists. With the continuous advancement in technology, electronic products used in augmented reality (AR) and virtual reality (VR) have gradually entered the public eye.
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