| 초록 |
Recently, many studies on electronic skins (E-skins) is spotlighted as a promising candidate of selective sensor that emulate sensing capabilities of human skin distinguishing various mechanical stimuli such as pressure, tension, torsion. However, previous reports still suffer from the ability to distinguish and recognize two or more mechanical stimuli including pressure, tension, and torsion. In this talk, we describe E-skin recognizing two mechanical stimuli such as pressure, strain using visco-poroelastic behavior of ionic pump. The visco-poroelastic behavior of ionic pump have not only the viscoelastic behavior by the polymer matrix deformation, but also the poroelastic behavior due to the diffusion of the ions inside the polymer matrix. As a result, our E-skin based on ionic pump is capacitive mechanical sensors of vertical and coplanar structure. These can distinguish pressure and strain by using the same direction of diffusion of ions in response to mechanical stimuli. |
