Flexible and high selective pressure sensitive rubber for tactile sensing

This study proposes and demonstrates a multi-layered pillar-like, carbon black (CB)/polydimethylsiloxane (PDMS)-based pressure sensor embedded in silicone rubbers to realize high selectivity of tactile pressure against bending of substrate based on a strain engineering. This device is fabricated by all solution-based process that is eventually applied to all-printing technique. Furthermore, as the first proof-of-concept, real-time tactile sensing is demonstrated for several applications such as wearable devices and robotic artificial skin (e-skin). This finding and demonstration eventually can be applied to the low-cost, high precise tactile sensor that can be conformally covered over any surfaces.