Hydrogels have emerged as promising candidates for the next generation of flexible electronics for human-machine interaction,owing to their excellent biocompatibility,safety,and flexibility.In this work,a novel hydrop...Hydrogels have emerged as promising candidates for the next generation of flexible electronics for human-machine interaction,owing to their excellent biocompatibility,safety,and flexibility.In this work,a novel hydrophobic/electrostatic dual-crosslinked hydrogel,polyacrylic acid-divinylbenzeneliquid metal(PAAD-LM)hydrogel,was synthesized for the first time by a facile one-stepγ-radiation method.PAAD-LM hydrogel exhibits remarkable stretchability(elongation at break of 5257±170%,areal strain of>7000%without break),self-healing capability,and excellent responsiveness as flexible touch panel and strain sensor.The hydrogel-based device demonstrates versatile functionalities,including painting,keyboard and mouse control applications,high-sensitivity recording of various human body movement signals,and VR smart gloves.The function of the hydrogel-based device is converted successfully through circuit and program design.With its stretchable and self-healing properties,PAAD-LM hydrogel holds great potential for advanced multifunctional wearable electronic devices.This work also provides novel insights into the synthesis of high-tensile,sensitive and multifunctional hydrogels.展开更多
基金support from National Natural Science Foundation of China(No.12375336,11875078).
文摘Hydrogels have emerged as promising candidates for the next generation of flexible electronics for human-machine interaction,owing to their excellent biocompatibility,safety,and flexibility.In this work,a novel hydrophobic/electrostatic dual-crosslinked hydrogel,polyacrylic acid-divinylbenzeneliquid metal(PAAD-LM)hydrogel,was synthesized for the first time by a facile one-stepγ-radiation method.PAAD-LM hydrogel exhibits remarkable stretchability(elongation at break of 5257±170%,areal strain of>7000%without break),self-healing capability,and excellent responsiveness as flexible touch panel and strain sensor.The hydrogel-based device demonstrates versatile functionalities,including painting,keyboard and mouse control applications,high-sensitivity recording of various human body movement signals,and VR smart gloves.The function of the hydrogel-based device is converted successfully through circuit and program design.With its stretchable and self-healing properties,PAAD-LM hydrogel holds great potential for advanced multifunctional wearable electronic devices.This work also provides novel insights into the synthesis of high-tensile,sensitive and multifunctional hydrogels.
