Triboelectric sensor with ultra-wide linear range based on water-containing elastomer and ion-rich interface.

ABSTRACT: The incompatibility of the high sensitivity and wide linear range still restricts the further development of active sensors. Here we report a triboelectric pressure sensor based on water-containing triboelectric elastomer with gradient-based microchannels. Tiny amount of liquid is injected into the triboelectric elastomer and the pressure-induced water bridges can modulate the built-in electric field of the sensor, which enhance the signal linearity near the compression limit. Moreover, it has been found that liquid-solid contact electrification can be enhanced by triggering selective ionic transfer, while the prepared ion-rich interface in the microchannels boosts the sensitivity of the sensor. Hence, an ultra-wide linear range (5 kPa-1240 kPa) with a sensitivity of 0.023 V kPa^-1

SUBMITTER: Qin S 

PROVIDER: S-EPMC11624205 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature