Piezoresistive Pressure Sensor Based on a Conductive 3D Sponge Network for Motion Sensing and Human–Machine Interface

• DOI: 10.1021/acsami.2c18203
• Publication Date: 2023-01-05T20:07:26Z
• Authors: Wei Cao; Yan Luo; Yiming Dai; Xin Wang; Kaili Wu; Huijuan Lin; Kun Rui; Jixin Zhu
• Keywords: Piezoresistive effect; Interface (matter); Sponge

Flexible sensors have attracted increasing attention owing to their important applications in human activity monitoring, medical diagnosis, and human–machine interaction. However, the rational design of low-cost with desirable properties (e.g., high sensitivity excellent stability) extended is still a great challenge. Herein, simple cost-effective strategy reported by immersing polyurethane (PU) sponge graphene oxide solution followed situ chemical reduction construct reduced (RGO)-wrapped PU sensor. Ascribed compressive resilience an electrically conductive RGO layer, constructed flexible sensor exhibits satisfactory sensing performance (17.65 kPa–1) low-load range (0–3.2 kPa), wide compression strain (0–80%), reliable stability (8000 cycles). In addition, these can be successfully applied monitor movements identify weight objects. Through use array integrated signal acquisition circuit, reasonably designed realize tactile feedback via mapping real-time spatial distribution pressure complicated tasks show potential electronic pianos, skin, remote control home electronics.