Design of a Photoactuator Based on a Photosalient Crystal Driven by Solid‐State [2+2] Cycloaddition

based metal complex, incorporated into a polyvinyl alcohol (PVA) matrix to achieve flexible, controlled macroscopic shape-dependent photomechanical motions. The actuator successfully performs light-controlled mechanical work, including mimicking bio-responses, silica-ball displacement. We performed the quantitative analysis of its motion as a function of time and displacement. The actuator's performance is strongly dependent on strength, thickness, and applied load. As the rate and magnitude of actuation depend on UV exposure, a theoretical model is developed to identify crucial parameters for optimized performance. The model quantitatively evaluates time-dependent light-induced deflection and the resulting photo-actuation force under no(with) load conditions, capturing an initial fast response followed by a slower regime governed by above parameters. The rapid conversion of photochemical energy into mechanical work is further demonstrated through a prototype photo-switch. Overall, this study advances the understanding of light-controlled actuation in composite films and contributes to the development of next-generation smart soft microrobots from both experimental and theoretical perspectives.