Hydrogel-based actuators

Hydrogel-based actuators are devices that use water-absorbing gels to produce movement or force. These hydrogels can swell or shrink in response to stimuli like temperature, light, or pH changes. When the gel absorbs water, it expands; when it loses water, it contracts. By controlling these reactions, hydrogel actuators can mimic natural movements, making them useful in soft robotics, medical devices, and sensors. Their flexibility, biocompatibility, and responsiveness make them versatile components for developing soft, adaptable systems that interact gently with their environment.