Fully paper-integrated hydrophobic and air permeable piezoresistive sensors for high-humidity and underwater wearable motion monitoring

Abstract Paper-based electronics have attracted much attention due to their softness, degradability, and low cost. However, paper-based sensors are difficult apply high-humidity environments or even underwater. Here, we report a fully paper-integrated piezoresistive sensing system that exhibits flexibility, waterproofing, air permeability, biocompatibility. This consists of hydrophobic paper as the substrate encapsulation layer, conductive with double ‘zig-zag’ dotted surface structure silver paste films interconnects. The structural design layer helps increase contact area in adjacent layers under pressure further improves sensitivity. can be worn on human skin ambient environment, wet water for real-time monitoring physiological signals permeability waterproofing its fiber structure. Such device provides reliable, economical, eco-friendly solution wearable technologies.