Paper-based electronics have attracted much attention due to their softness,degradability,and low cost.However,paper-based sensors are difficult to apply to high-humidity environments or even underwater.Here,we report...Paper-based electronics have attracted much attention due to their softness,degradability,and low cost.However,paper-based sensors are difficult to apply to high-humidity environments or even underwater.Here,we report a fully paper-integrated piezoresistive sensing system that exhibits flexibility,waterproofing,air permeability,and biocompatibility.This system consists of hydrophobic paper as the substrate and encapsulation layer,conductive paper with a double‘zig-zag’and dotted surface structure as the sensing layer,and silver paste films as the interconnects.The structural design of the sensing layer helps to increase the contact area in adjacent layers under pressure and further improves the pressure sensitivity.The piezoresistive system can be worn on human skin in the ambient environment,wet environment,and water for real-time monitoring of physiological signals with air permeability and waterproofing due to its hydrophobic fiber structure.Such a device provides a reliable,economical,and ecofriendly solution to wearable technologies.展开更多
基金supported by the Joint Research Funds of Department of Science&Technology of Shaanxi Province and Northwestern Polytechnical University(No.2020GXLH-Z-021)Fundamental Research Funds for the Central Universities.
文摘Paper-based electronics have attracted much attention due to their softness,degradability,and low cost.However,paper-based sensors are difficult to apply to high-humidity environments or even underwater.Here,we report a fully paper-integrated piezoresistive sensing system that exhibits flexibility,waterproofing,air permeability,and biocompatibility.This system consists of hydrophobic paper as the substrate and encapsulation layer,conductive paper with a double‘zig-zag’and dotted surface structure as the sensing layer,and silver paste films as the interconnects.The structural design of the sensing layer helps to increase the contact area in adjacent layers under pressure and further improves the pressure sensitivity.The piezoresistive system can be worn on human skin in the ambient environment,wet environment,and water for real-time monitoring of physiological signals with air permeability and waterproofing due to its hydrophobic fiber structure.Such a device provides a reliable,economical,and ecofriendly solution to wearable technologies.
