论文标题
软介电膜中的对称性和对称性的分叉之间的相互作用与巨型电动作用的出现之间的相互作用
The interplay between symmetry-breaking and symmetry-preserving bifurcations in soft dielectric films and the emergence of giant electro-actuation
论文作者
论文摘要
在电场的作用下可能表现出极大变形的软弹性体对于诸如软机器人，可拉伸和柔性电子设备，能量收获等应用至关重要。这种材料的常规电动效应的关键限制因素是出现所谓的拉入不稳定性。在这项工作中，我们展示了一种非常简单的方法，可以哄骗介电薄膜朝着对称性的干草叉分叉状态，同时避免引进的不稳定性。通过两种分叉模式之间的非线性相互作用，我们预测超过200 $ \％$的传统上可能的电动作用菌株，并且在施加的电场较低的情况下。
Soft elastomers that can exhibit extremely large deformations under the action of an electric field are essential for applications such as soft robotics, stretchable and flexible electronics, energy harvesting among others. The critical limiting factor in conventional electro-actuation of such materials is the occurrence of the so-called pull-in instability. In this work, we demonstrate an extraordinarily simple way to coax a dielectric thin film towards a symmetry-breaking pitchfork bifurcation state while avoiding pull-in instability. Through the nonlinear interplay between the two bifurcation modes, we predict electro-actuation strains that exceed what is conventionally possible by 200$\%$, and at significantly lower applied electric fields.
