Finger-inspired rigid-soft hybrid tactile sensor with superior sensitivity at high frequency.

ABSTRACT: Among kinds of flexible tactile sensors, piezoelectric tactile sensor has the advantage of fast response for dynamic force detection. However, it suffers from low sensitivity at high-frequency dynamic stimuli. Here, inspired by finger structure-rigid skeleton embedded in muscle, we report a piezoelectric tactile sensor using a rigid-soft hybrid force-transmission-layer in combination with a soft bottom substrate, which not only greatly enhances the force transmission, but also triggers a significantly magnified effect in d₃₁ working mode of the piezoelectric sensory layer, instead of conventional d₃₃ mode. Experiments show that this sensor exhibits a super-high sensitivity of 346.5 pC N^-1 (@ 30 Hz), wide bandwidth of 5-600 Hz and a linear force detection ra

SUBMITTER: Zhang J 

PROVIDER: S-EPMC9422944 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature