Stretchable epidermal electronics with stable electrical performance have been widely applied in numerous fields,including advanced medical therapy,wear-able electronics,soft robotics,and human–machine interaction.Ho...Stretchable epidermal electronics with stable electrical performance have been widely applied in numerous fields,including advanced medical therapy,wear-able electronics,soft robotics,and human–machine interaction.However,con-ventional stretchable devices,which typically integrate a pliant substrate and a conductor,often encounter inferior electrical performance under sustained or intense stretching due to poor stretchability,limited permeability,and the notable disparity in Young's modulus between the substrate and the conductor.This mechanical discord intensifies problems such as reduced durability and inconsistent conductivity.In this work,we address these limitations by devising a liquid metal-based flexible conductor via an innovative direct coating method.This conductor,supported by an electrospun fiber nanomesh,reveals markedly enhanced permeability through a pre-stretch activation process.The resulting electrode demonstrates remarkable electrical conductivity reaching 3730 S cm^(-1),superior permeability with a water vapor transmission rate of 40.2 g m^(-)2 h^(-1),and extraordinary stretchability(>2000%strain),coupled with exceptional mechanical durability.The liquid metal fiber mat structure allows for the creation of breathable,on-skin electronics capable of long-term electro-physiological monitoring,rendering it ideal for continuous health monitoring applications.展开更多
基金National Natural Science Foundation of China,Grant/Award Numbers:52303371,W2521021Guangdong Science and Technology Department,Grant/Award Numbers:2021B0301030005,STKJ2023075,2022A1515110209+5 种基金Guangdong Education Department,Grant/Award Number:2022KQNCX112Guangdong TechnionGTIIT Changzhou Innovation Institute,Grant/Award Number:GCII-Seed-202406Key Discipline(KD)FundTechnionStart-Up Fund from Guangdong Technion。
文摘Stretchable epidermal electronics with stable electrical performance have been widely applied in numerous fields,including advanced medical therapy,wear-able electronics,soft robotics,and human–machine interaction.However,con-ventional stretchable devices,which typically integrate a pliant substrate and a conductor,often encounter inferior electrical performance under sustained or intense stretching due to poor stretchability,limited permeability,and the notable disparity in Young's modulus between the substrate and the conductor.This mechanical discord intensifies problems such as reduced durability and inconsistent conductivity.In this work,we address these limitations by devising a liquid metal-based flexible conductor via an innovative direct coating method.This conductor,supported by an electrospun fiber nanomesh,reveals markedly enhanced permeability through a pre-stretch activation process.The resulting electrode demonstrates remarkable electrical conductivity reaching 3730 S cm^(-1),superior permeability with a water vapor transmission rate of 40.2 g m^(-)2 h^(-1),and extraordinary stretchability(>2000%strain),coupled with exceptional mechanical durability.The liquid metal fiber mat structure allows for the creation of breathable,on-skin electronics capable of long-term electro-physiological monitoring,rendering it ideal for continuous health monitoring applications.
