A self-power-transmission and non-contact-reception keyboard based on a novel resonant triboelectric nanogenerator (R-TENG)

We present a self-power-transmission and non-contact-reception keyboard using a novel resonant triboelectric nanogenerator (R-TENG). Based on the nature of self-power-generation and capacitive behaviour of TENG, each key on the designed keyboard combines a TENG, a coil and an external capacitor to form the R-TENG to generate an oscillating signal. The oscillating signals are then non-contact coupled to the receiving coils, which are then processed by a receiver circuit and visualised by Labview on PC. Using different external capacitors, each key is tuned to a unique range of oscillating frequencies, which is used to identify which key is being pressed. The novel R-TENG has potentially widespread applications in self-powered wireless motion tracking, human-computer interface ubiquitous in modern commercial and industrial applications.