“刚柔并济”人造肌肉举起四千倍自重物体

Core Insights - A research team from Ulsan Institute of Science and Technology has developed a new type of artificial muscle that can switch between "soft and flexible" and "hard and strong" states, capable of lifting objects up to 4000 times its own weight, significantly outperforming human muscles [1] Group 1: Innovation and Technology - The new artificial muscle utilizes a dual-crosslinked polymer network structure, where chemical bonds provide structural strength, and thermal stimuli can form or break physical bonds to change stiffness under different conditions [1] - The micro artificial muscle weighs only 1.25 grams and can lift 5 kilograms in its rigid state, demonstrating a strain rate of 86.4%, which is more than double that of human muscles [1] - The unit volume power density of this artificial muscle reaches 1150 kJ/m³, which is 30 times greater than that of human muscles [1] Group 2: Applications and Future Prospects - The incorporation of surface-treated magnetic particles allows for precise movement control under external magnetic fields, enhancing the functionality of the material [1] - This composite material, combining both "soft" and "hard" characteristics, opens new avenues for the development of more flexible soft robots, wearable devices, and intuitive human-machine interaction systems [1]