Design of foam flexible pressure sensor based on PDMS/MWCNTs/HPC/PDA for human motion detection

Abstract

Flexible pressure sensors have potential applications in human motion detection and personal health monitoring. In this paper, foam flexible pressure sensors were prepared using polydimethylsiloxane (PDMS) and multi-walled carbon nanotubes (MWCNTs) with NaCl as a sacrificial template by adding (hydroxypropyl cellulose) HPC dispersant and (dopamine) DA binder to the conductive solution. It has the sensitivity of 0.07454 kPa^-1, fast response, and high repeatability at low stress. The sensor was fixed on the skin of a volunteer and could detect large movements of the finger, wrist, and even different walking states, showing that our sensor has application potential in wearable electronics.