With the rapid development of flexible wearable electronic devices,a multifunctional electronic skin with excellent strain sensing performance,satisfactory air permeability,and good self-powered capability for portabi...With the rapid development of flexible wearable electronic devices,a multifunctional electronic skin with excellent strain sensing performance,satisfactory air permeability,and good self-powered capability for portability is urgently desired.Herein,inspired by the“brick-and-mortar”microstructure of natural nacre,an ultra-stretchable and highly sensitive multifunctional e-skin composed of Ti_(3)C_(2)T_(x)(MXene)/Carbon nanotubes(CNTs)/thermoplastic polyurethane films is developed through electrospinning and spraying technology.Benefiting from the tunable multilayer structural design,the multifunctional e-skin synchronously demonstrates a high sensitivity(gauge factor,GF_(max)=5.8×10^(4)),wide sensing range(up to 535%strain),low detection limit(0.15%strain),fast response time(80 ms)and good durability.The sensing mechanism is developed based on the evolution of a two-dimensional(2D)MXene/1D CNTs synergistic conductive network and the expansion of the microcracked structure synchronously.The multifunctional e-skin is also assembled as a single-electrode triboelectric nanogenerator,which shows high triboelectric output and good stability,broadening the application of the multifunctional e-skin in tactile sensing.The nacre-mimetic self-powered e-skin is demonstrated for human physiological signal acquisition,cardiopulmonary resuscitation(CPR),and posture correction training,presenting fascinating application strategies for ergonomics,emergency medical services,and athlete training assessment.展开更多
基金supported by the National Natural Science Foundation of China(52303114,52173048)China Postdoctoral Science Foundation(2023M733199,2024T170838)。
文摘With the rapid development of flexible wearable electronic devices,a multifunctional electronic skin with excellent strain sensing performance,satisfactory air permeability,and good self-powered capability for portability is urgently desired.Herein,inspired by the“brick-and-mortar”microstructure of natural nacre,an ultra-stretchable and highly sensitive multifunctional e-skin composed of Ti_(3)C_(2)T_(x)(MXene)/Carbon nanotubes(CNTs)/thermoplastic polyurethane films is developed through electrospinning and spraying technology.Benefiting from the tunable multilayer structural design,the multifunctional e-skin synchronously demonstrates a high sensitivity(gauge factor,GF_(max)=5.8×10^(4)),wide sensing range(up to 535%strain),low detection limit(0.15%strain),fast response time(80 ms)and good durability.The sensing mechanism is developed based on the evolution of a two-dimensional(2D)MXene/1D CNTs synergistic conductive network and the expansion of the microcracked structure synchronously.The multifunctional e-skin is also assembled as a single-electrode triboelectric nanogenerator,which shows high triboelectric output and good stability,broadening the application of the multifunctional e-skin in tactile sensing.The nacre-mimetic self-powered e-skin is demonstrated for human physiological signal acquisition,cardiopulmonary resuscitation(CPR),and posture correction training,presenting fascinating application strategies for ergonomics,emergency medical services,and athlete training assessment.
