Highly sensitive and stretchable fiber strain sensors empowered by synergetic conductive network of silver nanoparticles and carbon nanotubes

Nowadays the demand for flexible strain sensors is booming for human-centered wearable applications, yet it is still challenging to achieve a high sensitivity at large stretchability of human motions (∼100%). Herein, carbon nanotubes (CNTs) and silver nanoparticles (AgNPs) layers were consecutively deposited on stretchable polyurethane (PU) fiber by ultrasonication and polydopamine (PD) assisted chemical deposition, to achieve a fiber sensor...