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Multi-Functional Human-Machine Interface (HMI) Using Flexible Wearable Triboelectric Nanogenerator for Diversified Interacting Applications

A triboelectric interacting patch with only four sensing electrodes is presented as flexible and multifunctional human-machine interface for the detection of various human-machine interactions. By leveraging the predefined operation areas, position detection under finger operations can be achieved through the output relationship of the four electrodes. The accurate sensing capability of the triboelectric patch is compatible with common finger motions such as finger tapping and sliding, opening up broad application in various interacting areas, e.g., writing interface, security code system, intuitive intelligent control, virtual/augmented reality, and robotics, etc.