Self-powered, ultra-sensitive, flexible tactile sensors based on contact electrification

摘要

A tactile sensor for sensing touch from a human finger includes a triboelectric layer and includes a material that becomes electrically charged after being in contact with the finger. The first side of a first conductive layer is in contact with the second side of triboelectric layer. The first side of a dielectric layer is in contact with the first conductive layer and the second side of the dielectric layer is in contact with a second conductive layer. When the triboelectric layer becomes electrically charged after being in contact with the finger, the first conductive layer and the second conductive layer are subjected to an electric field, which has a first field strength at the first conductive layer and a second field strength, different from the first field strength, at the second conductive layer. A plurality of tactile sensors can be arranged as a keyboard.

主权项

1. A tactile sensor for sensing touch from a human finger and the like, comprising:
(a) a triboelectric layer, having a first side and an opposite second side, that includes a material that becomes electrically charged after being in contact with the finger; (b) a first conductive layer, having a first side and an opposite second side, the first side of the first conductive layer in contact with the second side of triboelectric layer; (c) a second conductive layer, having a first side and an opposite second side; and (d) a dielectric layer, having a first side and an opposite second side, the first side of the dielectric layer in contact with the second side of the first conductive layer and the second side of the dielectric layer in contact with the first side of the second conductive layer, the dielectric layer having a width so that when the triboelectric layer becomes electrically charged after being in contact with the finger, the first conductive layer and the second conductive layer are subjected to an electric field, wherein the electric field has a first field strength at the first conductive layer and a second field strength, different from the first field strength, at the second conductive layer.