| 초록 |
Recently, many attempts have been made to implement electronic skin that can mimic human skin because mechanoreceptors in human skin possess high sensitivity, wide sensing range and high sensing resolution for external stimuli. However, previous reports suffer from fundamental resolution problem arising from the use of film like materials through pouring and spinning processes. To overcome these challenges, we describe an all-printed e-skin based on deformable ionic lens array inspired by the physiological tactile sensing mechanism and the morphological feature of mechanoreceptors in human skin. We emulated an ionic mechanotransduction channel with a piezocapacitive ionic mechanosensory system that engages in ion migration when the polymer matrix is deformed under a mechanical non-equilibrium state. The size and morphology of the ionic lenses were tuned by printing process variables and post-treatment conditions, which resulted in high sensitivity and high resolution of the device. |
