A Scalable, Incoherent‐Light‐Powered, Omnidirectional Self‐Oscillator

Light-fueled self-oscillators based on stimuli-responsive soft materials have been explored toward the realization of a myriad nonequilibrium robotic functions, such as adaptation, autonomous locomotion, and energy conversion. However, high density unidirectionality light field, together with unscalable design existing demonstrations, hinder their further implementation. Herein, light-responsive lampshade-like smart material assembly new self-oscillator model that is unfettered by abovementioned challenges, introduced. Liquid crystal elastomer low phase transition temperature used photomechanical component to provide twisting movement under low-intensity incoherent field. A spiral lampshade frame ensures an equal amount being shadowed negative feedback sustain oscillation upon constant field from omnidirectional excitation (0°–360° azimuth 20°–90° zenith). Different-sized oscillators 6, 15, 50 mm in diameter are fabricated prove possibility scaling up down concept. The results viewpoint fast-growing topic self-oscillation matter implications for self-sustained robots.