Photo-responsive deformable structure and method for driving the same

Photo-responsive deformable structure capable of locomotion via light-induced bending of azobenzene liquid crystal polymers

This technology is a photo-responsive deformable structure and a method for operating it, which utilizes the bending deformation caused by the cis-trans isomerization of azobenzene liquid crystal polymers induced by light irradiation as a driving force.

Existing intelligent composite actuators have limitations in that they require external heat supply, electrical current, or direct mechanical tension to operate, leading to a high dependency on external devices and complex system requirements.

This technology proposes a method utilizing a multi-polymer film structure containing photo-responsive azobenzene liquid crystal polymers and adhesive supports at the ends of the body. By generating reversible bending deformation through irradiation with specific wavelengths of light, it creates adhesion to and release from the ground, as well as propulsion, allowing for active movement control using only light energy without mechanical contact. Applicable to microrobots, smart materials, and light-driven actuators, it presents new possibilities for next-generation driving methods that control movement solely with light, eliminating the need for power sources or wiring.

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Key Features:

• A first body part comprising a polymer film that undergoes bending deformation upon light irradiation
• A second body part comprising a polymer film that undergoes bending deformation upon light irradiation
• A connecting part that links the first and second body parts, allowing the bending deformation to be transmitted throughout the entire structure
• Adhesive supports formed at one end of the first and second body parts that come into contact with the ground

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This invention was developed with support from the Ministry of Science and ICT for the design and implementation of photo-responsive self-deforming structures.