Integrated flexible stretchable tactile sensor based on super-capacitor sensing principle

Abstract

The invention provides an integrated flexible stretchable tactile sensor based on a super-capacitor sensing principle. The integrated flexible stretchable tactile sensor comprises a foam upper electrode layer, a foam electrolyte layer and a foam lower electrode layer which are sequentially arranged, wherein the foam electrolyte layer is prepared by foaming a mixture of a solvent, a high polymer material, esters, an ion carrier and bacterial cellulose, the mass ratio of the foam upper electrode layer to the foam lower electrode layer is (25-30):(3-4):(4-6):(1-2):(0.4-0.6), the foam upper electrode layer and the foam lower electrode layer are made of the same material and are prepared by foaming a mixture of a solvent, a polymer material, esters, a conductive material and bacterial cellulose, and the mass ratio of the five materials is (25-30):(3-4):(4):(0.4-6). The sensor disclosed by the invention has the characteristic of integral device structure integration, the electrodes and the electrolyte are well combined without microscopic physical gaps, and the sensor has the advantages of ultrahigh flexibility and stretchability while high sensitivity and the wide detection range are obtained on the basis of a super capacitor principle.

Description

technical field [0001] The invention belongs to the technical field of flexible sensors, and in particular relates to an integrated flexible and stretchable tactile sensor based on the supercapacitive sensing principle. Background technique [0002] The development of stretchable, wearable, flexible and humanized soft electronic devices is of great significance to meet the increasing complexity and multi-functionality requirements of modern electronic products. Strain sensors, which can generate repeatable electrical changes when subjected to mechanical deformation, have broad applications in robotics, sports, health monitoring, and therapy. At present, there are still defects in material performance and device structure in the development of flexible and stretchable sensors. For electrode materials, several representative strain sensors that have been used so far use conductive materials such as carbon nanotubes, metals / semiconductors, graphene, and conductive polymers, an...

AI Technical Summary

Problems solved by technology

Since the various parts of the device are not organically combined as a whole, each part is prone to splitting or even detachment during flexible bending and repeated stretching.

Limited flexibility and stretching lead to defects such as small measurement factor, small measurement range, low sensitivity, and poor long-term repeatability of the sensor

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