Issue 31, 2019

Water-proof and thermally inert flexible pressure sensors based on zero temperature coefficient of resistance hybrid films

Abstract

The accurate measurement of pressure sensors realizes the idea of non-interference environmental monitoring, which is very important for the application of electronic skins (e-skins). Here, we designed a thermally inert flexible pressure sensor array based on a zero temperature coefficient of resistance (Z-TCR) hybrid film, consisting of multi-walled carbon nanotubes (MWCNTs) with a negative temperature coefficient (NTC) and graphite powders (GPs) with a positive temperature coefficient (PTC). In addition, to eliminate temperature interference, a water-proof effect can also be achieved by sealing the device in ethylene-vinyl acetate copolymer (EVA). The as-fabricated flexible pressure sensors exhibited excellent performances with ultrahigh sensitivity, fast response time, and good response stability at high frequency. The 5 × 5 pressure sensor array was also used for imaging spatial pressure distributions. The anti-environmental interference properties in combination with the excellent sensitivity, stability and extensibility show that the pressure sensor array has the potential for applications in e-skins.

Graphical abstract: Water-proof and thermally inert flexible pressure sensors based on zero temperature coefficient of resistance hybrid films

Supplementary files

Article information

Article type
Paper
Submitted
27 May 2019
Accepted
11 Jul 2019
First published
11 Jul 2019

J. Mater. Chem. C, 2019,7, 9648-9654

Water-proof and thermally inert flexible pressure sensors based on zero temperature coefficient of resistance hybrid films

Z. Gao, K. Jiang, Z. Lou, W. Han and G. Shen, J. Mater. Chem. C, 2019, 7, 9648 DOI: 10.1039/C9TC02832C

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