 A new type of flexible strain sensor was developed using a thermoplastic polyurethane elastomer, TPU, fibrous membrane coated with polydopamine and carbon nanotubes, CNTs. This sensor had an outstanding sensitivity under pulling forces, rapid reaction time, and a wide sensing range. It also demonstrated potential applications in detecting human motion at different locations of the body. This article was authored by XINU, Zijian Wu, Ling Wang, and others.