Flexible pressure/temperature sensing system based on Te-PEDOT:PSS composite thermoelectric material

Abstract

<p indent="0mm">With the rapid development of artificial intelligence, the demand for new flexible tactile sensors for human-machine interaction technology is increasing sharply. As an essential medium for intelligent bionic systems to obtain external information, such as intelligent manipulators and bionic prosthetic hands, flexible tactile sensors are significant for realizing bionic tactile perception and improving system intelligence. Recently, fabricating multimodal tactile sensors through theoptimal design of functional material and structure has become a key challenge in the field of flexible electronics. Herein, a thermoelectric sensing material composited of Te-poly (3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (Te-PEDOT:PSS) was prepared via a hydrothermal method, which was compounded within a three-dimensional porous dense amine foam framework and subsequently coated by a thin polyvinyl alcohol layer for encapsulation. The controllable preparation of sensitive composite materials with high interfacial stability was realized. Thus, the assembled flexible tactile sensor with a thermoelectric effect and capacitance performance can achieve the perception ability of pressure/temperature in contact/noncontact mode, respectively. Further, an intelligent manipulator sensory feedback system is constructed, and its performance in tactile perception is explored.