Graded intrafillable architecture-based iontronic pressure sensor with ultra-broad-range high sensitivity.

ABSTRACT: Sensitivity is a crucial parameter for flexible pressure sensors and electronic skins. While introducing microstructures (e.g., micro-pyramids) can effectively improve the sensitivity, it in turn leads to a limited pressure-response range due to the poor structural compressibility. Here, we report a strategy of engineering intrafillable microstructures that can significantly boost the sensitivity while simultaneously broadening the pressure responding range. Such intrafillable microstructures feature undercuts and grooves that accommodate deformed surface microstructures, effectively enhancing the structural compressibility and the pressure-response range. The intrafillable iontronic sensor exhibits an unprecedentedly high sensitivity (S_min > 220 kPa^-1) over a broad p

SUBMITTER: Bai N 

PROVIDER: S-EPMC6954251 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature