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A Light-activated Polymer Composite Enables On-demand Photocontrol of Biomimetic Swimming Towards Transportation at Liquid/Air Interface
摘要： Swimmers at liquid/air interface have drawn enormous attention for their potential applications while conventional devices face problems such as dependence on fuel, difficulty in motion control and accompanying high temperature. Herein, we show one novel light-driven swimmer based on bimorph composite structure of photoresponsive liquid-crystalline polymer network and commercially available polyimide (Kapton) whose motion is highly controllable with photoirradiation. The bilayer-structured film shows quickly photoinduced bending towards the Kapton side on exposure to UV light and recovers immediately after removal of light. When placed on liquid surface, the swimmer propels itself continually though rhythmic beating the liquid like a dolphin moving forward with its tail fin. Besides, light-powered rotation of the swimmer is successfully achieved by simply changing the length-width ratio and the irradiation site, mimicking the function of a dolphin’s pectoral fin. Combining the together, on-demand forward movement and rotation motion directional control of the photo-driven swimmer can be readily obtained at room temperature, showing promising for miniaturized transportation.
关键词： bionic motion,azobenzene,miniaturized transportation,light-driven device,photomechanical oscillation
更新于2025-09-23 15:22:29
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A Light-activated Polymer Composite Enables On-demand Photocontrol of Biomimetic Swimming Towards Transportation at Liquid/Air Interface
摘要： Swimmers at liquid/air interface have drawn enormous attention for their potential applications while conventional devices face problems such as dependence on fuel, difficulty in motion control and accompanying high temperature. Herein, we show one novel light-driven swimmer based on bimorph composite structure of photoresponsive liquid-crystalline polymer network and commercially available polyimide (Kapton) whose motion is highly controllable with photoirradiation. The bilayer-structured film shows quickly photoinduced bending towards the Kapton side on exposure to UV light and recovers immediately after removal of light. When placed on liquid surface, the swimmer propels itself continually though rhythmic beating the liquid like a dolphin moving forward with its tail fin. Besides, light-powered rotation of the swimmer is successfully achieved by simply changing the length-width ratio and the irradiation site, mimicking the function of a dolphin’s pectoral fin. Combining the together, on-demand forward movement and rotation motion directional control of the photo-driven swimmer can be readily obtained at room temperature, showing promising for miniaturized transportation.
关键词： bionic motion,azobenzene,photomechanical oscillation,miniaturized transportation,light-driven device
更新于2025-09-23 15:22:29