Electrobending,an emerging phenomenon in electroactive ceramics,has recently attracted significant interest;however,existing measurement methods often confound electrotensile and electrobending strains,leading to ambi...Electrobending,an emerging phenomenon in electroactive ceramics,has recently attracted significant interest;however,existing measurement methods often confound electrotensile and electrobending strains,leading to ambiguity.This study distinguishes electrotensile and electrobending strains in K_(0.5)Na_(0.5)NbO_(3)(KNN)ceramics by examining their thickness,frequency,temperature,and directional dependency,identifying a critical thickness threshold of 600μm for electrobending in samples of 8.5 mm diameter.This threshold establishes a clear distinction between electrotensile and electrobending within the KNN system and provides a benchmark that can be applied to other systems through similar methodologies.Additionally,new electrobending parameters have been defined to assess bending deformation,addressing recent misinterpretations of“giant strain”and advancing electrostrain research by introducing an electrobending framework.展开更多
基金supported by the National Natural Science Foundation of China(No.52172135)the Youth Top Talent Project of the National Special Support Program(No.2021-527-07)+2 种基金the Leading Talent Project of the National Special Support Program(No.2022WRLJ003)the Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholars(Nos.2022B1515020070 and 2021B1515020083)the Young Elite Scientists Sponsorship Program for PhD Student by China Association for Science and Technology.
文摘Electrobending,an emerging phenomenon in electroactive ceramics,has recently attracted significant interest;however,existing measurement methods often confound electrotensile and electrobending strains,leading to ambiguity.This study distinguishes electrotensile and electrobending strains in K_(0.5)Na_(0.5)NbO_(3)(KNN)ceramics by examining their thickness,frequency,temperature,and directional dependency,identifying a critical thickness threshold of 600μm for electrobending in samples of 8.5 mm diameter.This threshold establishes a clear distinction between electrotensile and electrobending within the KNN system and provides a benchmark that can be applied to other systems through similar methodologies.Additionally,new electrobending parameters have been defined to assess bending deformation,addressing recent misinterpretations of“giant strain”and advancing electrostrain research by introducing an electrobending framework.
