Developing dielectric liquid crystal elastomers. (A) The dielectric LCE film achieves fast and large actuation at a low voltage. Reprinted with permission from Ref [129]. (B) A flat DLCE film exhibits a three-dimensional cone deformation under Maxwell stress when a voltage is applied. Reprinted with permission from Ref [130]. (C) A DLCE device generates 2D to 3D shape change with nonlocal Gaussian curvature at a voltage of 2.5 kV. Reprinted with permission from Ref [131]. (D) The actuation mode switching of DLCE is based on the reversible LCE shape-changing. Reprinted with permission from Ref [132].