Gallium-based liquid metals are promising for stretchable electronics and beyond.However,their inherent fluidity and weak structural confinement in conventional films often cause leakage and functional failure under e...Gallium-based liquid metals are promising for stretchable electronics and beyond.However,their inherent fluidity and weak structural confinement in conventional films often cause leakage and functional failure under extreme deformation.Here,we report ultrathin liquid metal micromesh electrodes fabricated through interfacial self-assembly of microparticles and subsequent laser sintering.These ultrathin electrodes(minimum thickness:317 nm)exhibit excellent stretchability(up to 1200%)and foldability,maintaining stable performance after 10,000 folding cycles at a 70μm bending radius.Their mechanical robustness arises from the unique micromesh architecture that disperses strain and alleviates stress concentration.It also confines the liquid metal within defined pathways,thereby preventing leakage(leakage resistance:968.75 kPa)and ensuring structural integrity under extreme deformation.Moreover,the micromesh structure endows the electrodes with excellent electrical stability(R/R_(o)=1.66 at 300%strain)and translucency.We demonstrate applications of these electrodes in flexible LED arrays,wireless power transfer,and angular sensing.展开更多
基金supported in part by the National Key R&D Program of China(No.2022YFF0705002)Collaborative Innovation Program of Hefei Science Center,CAS(No.2022HSCCIP001)+2 种基金Joint Research Fund for Overseas Chinese,Hong Kong and Macao Young Scholars(No.51929501)the Students’Innovation and Entrepreneurship Foundation of USTC(CY2024S014A)from the Institute of Innovation and Entrepreneurship,University of Science and Technology of Chinacarried out at the Instruments Center for Physical Science,University of Science and Technology of China.
文摘Gallium-based liquid metals are promising for stretchable electronics and beyond.However,their inherent fluidity and weak structural confinement in conventional films often cause leakage and functional failure under extreme deformation.Here,we report ultrathin liquid metal micromesh electrodes fabricated through interfacial self-assembly of microparticles and subsequent laser sintering.These ultrathin electrodes(minimum thickness:317 nm)exhibit excellent stretchability(up to 1200%)and foldability,maintaining stable performance after 10,000 folding cycles at a 70μm bending radius.Their mechanical robustness arises from the unique micromesh architecture that disperses strain and alleviates stress concentration.It also confines the liquid metal within defined pathways,thereby preventing leakage(leakage resistance:968.75 kPa)and ensuring structural integrity under extreme deformation.Moreover,the micromesh structure endows the electrodes with excellent electrical stability(R/R_(o)=1.66 at 300%strain)and translucency.We demonstrate applications of these electrodes in flexible LED arrays,wireless power transfer,and angular sensing.
