The rapid evolution of flexible electronic devices promises to revolutionize numerous fields by expanding the applications of smart devices.Nevertheless,despite this vast potential,the reliability of these innovative ...The rapid evolution of flexible electronic devices promises to revolutionize numerous fields by expanding the applications of smart devices.Nevertheless,despite this vast potential,the reliability of these innovative devices currently falls short,especially in light of demanding operation environment and the intrinsic challenges associated with their fabrication techniques.The heterogeneity in these processes and environments gives rise to unique failure modes throughout the devices'lifespan.To significantly enhance the reliability of these devices and assure long-term performance,it is paramount to comprehend the underpinning failure mechanisms thoroughly,thereby,enabling,optimal design solutions.A myriad of investigative efforts have been dedicated to unravel these failure mechanisms,utilizing a spectrum of tools from analytical models,numerical methods,to advanced characterization methods.This review delves into the root causes of device failure,scrutinizing both the fabrication process and the operation environment.Next,We subsequently address the failure mechanisms across four commonly observed modes:strength failure,fatigue failure,interfacial failure,and electrical failure,followed by an overview of targeted characterization methods associated with each mechanism.Concluding with an outlook,we spotlight ongoing challenges and promising directions for future research in our pursuit of highly resilient flexible electronic devices.展开更多
This work presents a novel highly adaptable flexible soft glove composed of multimode deformable three-jointed soft fingers.The soft fingers are assembled by soft actuators and plastic materials that can be driven and...This work presents a novel highly adaptable flexible soft glove composed of multimode deformable three-jointed soft fingers.The soft fingers are assembled by soft actuators and plastic materials that can be driven and controlled with single Degree of Freedom(DOF).A variety of different soft actuators are used as joint drive components to meet the motion requirements of fingers under different working conditions.We established a theoretical model to describe the deflection of the soft actuators based on reciprocal theorems.In addition,the finite-element method(FEM)was used to simulate the curvature change of the soft actuator and the soft finger,the soft actuators theoretical and simulation results were verified by experiments,and the multimode deformable soft fingers were simulated by FEM.Finally,a five-finger soft rehabilitation glove was prototyped and presented experimentally where the flexibility and functionality endowed by the soft fingers were demonstrated and highlighted.The versatility was also showcased in the applications.展开更多
In the past two decades,various research works have been conducted in the field of flexible electronic devices(FEDs).Researchers have focused their efforts on solving the existing challenges in the electronic,electroc...In the past two decades,various research works have been conducted in the field of flexible electronic devices(FEDs).Researchers have focused their efforts on solving the existing challenges in the electronic,electrochemical,and mechanical behaviors of FEDs.The importance of flexible lithium-ion batteries(FLIBs)in the area of FEDs is evident;however,less attention has been paid to the mechanical behavior of FLIBs in comparison with the material and electrochemical characteristics.The present paper reviewed the research works in the FLIBs,focusing on their mechanical integrity and electrochemical performances.First,an introduction to FLIBs was presented,and the previous review papers published in this field were briefly introduced.Then,a detailed review of the available electrochemical and mechanical research works on FLIBs was presented.Moreover,the mechanical testing methods(tensile,compressive,indentation,fatigue,and adhesion)for the characterization of FLIBs’components,the research works on the simulation and modeling of the mechanical behavior of FLIBs,and a summary of the present situation and the future trend of research in this field were reviewed and presented.展开更多
基金support by the National Natural Science Foundation of China(NSFC)[Grant No.11972325,12272342,12202398]the Natural Science Foundation of Zhejiang Province(LGF20A020001).
文摘The rapid evolution of flexible electronic devices promises to revolutionize numerous fields by expanding the applications of smart devices.Nevertheless,despite this vast potential,the reliability of these innovative devices currently falls short,especially in light of demanding operation environment and the intrinsic challenges associated with their fabrication techniques.The heterogeneity in these processes and environments gives rise to unique failure modes throughout the devices'lifespan.To significantly enhance the reliability of these devices and assure long-term performance,it is paramount to comprehend the underpinning failure mechanisms thoroughly,thereby,enabling,optimal design solutions.A myriad of investigative efforts have been dedicated to unravel these failure mechanisms,utilizing a spectrum of tools from analytical models,numerical methods,to advanced characterization methods.This review delves into the root causes of device failure,scrutinizing both the fabrication process and the operation environment.Next,We subsequently address the failure mechanisms across four commonly observed modes:strength failure,fatigue failure,interfacial failure,and electrical failure,followed by an overview of targeted characterization methods associated with each mechanism.Concluding with an outlook,we spotlight ongoing challenges and promising directions for future research in our pursuit of highly resilient flexible electronic devices.
基金supported by Scientific and technological breakthroughs in Henan Province (No.222102220101), (No.212102210067)National natural science foundation of China (Grant No.52075500).
文摘This work presents a novel highly adaptable flexible soft glove composed of multimode deformable three-jointed soft fingers.The soft fingers are assembled by soft actuators and plastic materials that can be driven and controlled with single Degree of Freedom(DOF).A variety of different soft actuators are used as joint drive components to meet the motion requirements of fingers under different working conditions.We established a theoretical model to describe the deflection of the soft actuators based on reciprocal theorems.In addition,the finite-element method(FEM)was used to simulate the curvature change of the soft actuator and the soft finger,the soft actuators theoretical and simulation results were verified by experiments,and the multimode deformable soft fingers were simulated by FEM.Finally,a five-finger soft rehabilitation glove was prototyped and presented experimentally where the flexibility and functionality endowed by the soft fingers were demonstrated and highlighted.The versatility was also showcased in the applications.
基金Z.X.W.would like to thank International Partnership Program of Chinese Academy of Sciences(No.121D11KYSB20190080)M.M.S.would like to thank the Iran National Science Foundation(INSF)(No.98011735).
文摘In the past two decades,various research works have been conducted in the field of flexible electronic devices(FEDs).Researchers have focused their efforts on solving the existing challenges in the electronic,electrochemical,and mechanical behaviors of FEDs.The importance of flexible lithium-ion batteries(FLIBs)in the area of FEDs is evident;however,less attention has been paid to the mechanical behavior of FLIBs in comparison with the material and electrochemical characteristics.The present paper reviewed the research works in the FLIBs,focusing on their mechanical integrity and electrochemical performances.First,an introduction to FLIBs was presented,and the previous review papers published in this field were briefly introduced.Then,a detailed review of the available electrochemical and mechanical research works on FLIBs was presented.Moreover,the mechanical testing methods(tensile,compressive,indentation,fatigue,and adhesion)for the characterization of FLIBs’components,the research works on the simulation and modeling of the mechanical behavior of FLIBs,and a summary of the present situation and the future trend of research in this field were reviewed and presented.
