Soft dielectric thin films are widely used in electrical and electronic systems due to their low modulus,large deformation and strong adaptability.However,due to the low dielectric constant of the material,they usually need to serve in high electric field environment.Under high electric field,soft dielectric film is prone to instability and electrical breakdown.It affects the application range and stability of the material.In this paper,the stability of this kind of device is studied under the condition that the electrode's constraint on the soft dielectric film.First,the evolution law of the instability morphology in the process of voltage loading and unloading is described when the electrode has no constraint on the dielectric.Then,the inhibition of electromechanical instability by soft electrodes such as lithium chloride hydrogel is discussed.The chemical bonding method was used to strengthen the constraint of hydrogel electrode on the dielectric film,and the critical breakdown field strength of the dielectric film was increased.
关键词
软电介质薄膜/表面失稳/界面黏接/电场击穿强度
Key words
soft dielectric film/surface instability/interface bonding/electric field breakdown strength
维普
万方数据