Ultrasmall barium titanate nanoparticles modulated stretchable dielectric elastomer sensors with large deformability and high sensitivity

Large deformability and high sensitivity is difficult to be realized simultaneously in flexible sensors. Herein, taking advantage of the permittivity highly active surfaces ultrasmall barium titanate nanoparticles (BT NPs) stretchability p(BA-GMA) elastomer matrix, we propose a high-performance soft stretchable sensor. The addition BT NPs can not only increase capacitance polyacrylate-matrix composite dielectric material obtain sensitivity, but also basically maintains excellent mechanical properties polymer matrix. constants films from 5.68 13.13 at 10 kHz with content 0 15 vol.%, which results 236.16 pF for vol.% BT/p(BA-GMA) Combining large (a maximal deformation 87.2%), sensor has shows linearity stable output even if under dynamic measurement. dual-mode that utilizes orthogonality capacitance-resistance designed, performance monitoring human body movements noncontact present BT/p(BA-GMA)-based stability reliability exceed 65°C, meet application requirements monitoring.