All‐in‐One Luminescent Dielectric Elastomer Actuator Driven by a Single Electrical Stimulus with Large Out‐of‐Plane Actuation and Fast Response

ABSTRACT Dual‐function soft actuators that combine actuation and luminescence have broad application prospects in bionics, information transmission, and encryption. However, traditional dual‐function soft actuators require multiple stimuli to perform their functions concurrently, and they are slow to respond. Consequently, developing actuation‐luminescence dual‐function devices based on a single stimulus that can achieve fast and stable actuation is of great significance. Therefore, in this study, a dielectric elastomer actuator was integrated with the electroluminescent device by constructing an asymmetric electrode structure to decrease the voltage and optimizing the ZnS:Cu 2+ phosphor content to balance actuation performance and luminescent stability. The resulting all‐in‐one device exhibits simultaneous out‐of‐plane actuation and luminescence under a single electrical stimulus, with a fast response (∼160 ms), high curvature (4.71 cm −1 ), broad frequency response (0.5–15 Hz), excellent durability (20 000 cycles), and a synchronous luminous intensity of 72 nW/cm 2 . In addition, we developed laser engraving technology to fabricate bionic luminescent butterflies and multi‐size array devices, thereby expanding the applications of the dual‐function devices in fields such as bionics and multi‐environment displays. This strategy provides new ideas for the development of multifunctional soft actuators.