High Sensing Performance Hybrid Nanostructure Constructed via Nanoscale Confined Motion of Nanofiber and Nanoplatelet in Flexible Nanocomposite Sensor

Abstract

The swing process between construction and destruction of hybrid nanostructure in conductive nanocomposite under external stimulation plays a pivotal role in its sensing performance, and it is directly related with the nanoscale motion of the corresponding hybrid nanoparticles. When one-dimension (1D) nanofibers and two-dimension (2D) nanoplatelets were selectively distributed in thin cell walls via supercritical CO2 foaming, the confined nanoscale motion of 1D nanofibers and 2D nanoplatelets in the stretching process including hybrid nanoparticle rotation and separation were precisely regulated based on hybrid nanoparticle Monte Carlo theoretical modelling, and correspondingly an optimized complex hybrid nanostructure with suitable nanoparticle content, hybrid ratio and geometry was proposed to achieve a high gauge factor of 4469. The flexible nanocomposite sensor with designated hybrid nanostructure of high sensing performance was then tested for different signals and shows great potential in the application of human body motion monitoring.