We designed dielectric gels, a new type of polymer-based dielectric material. By using solvents with high dielectric constants, the gels achieve a unique combination of ultra-high dielectric constant, low elastic modulus, and excellent transparency, which are extremely challenging or impossible to realize with traditional polymer dielectrics. The gels exhibit high stretchability (stretch of approximately 10) and low mechanical hysteresis. We demonstrated the use of the dielectric gels by fabricating a bioinspired tunable lens, the focal length of which can be adjusted by varying the applied voltage. We believe that the dielectric gels, as a new type of polymer dielectric, offer new opportunities for soft robotics, sensors, electronics, optics, and biomimetics.

我们设计了介电凝胶，这是一种新型的基于聚合物的介电材料。通过使用具有高介电常数的溶剂，这些凝胶可实现超高介电常数，低弹性模量和出色的透明度的独特组合，而这是传统聚合物介电材料极富挑战性或无法实现的。凝胶表现出高拉伸性（拉伸约10）和低机械滞后性。我们通过制造生物启发型可调透镜演示了介电凝胶的使用，该透镜的焦距可以通过改变施加的电压来调节。我们相信，电介质凝胶作为一种新型的聚合物电介质，为软机器人，传感器，电子，光学和仿生技术提供了新的机遇。