http://en.people.cn/n3/2024/1112/c90000-20240410.html

Chinese scientists create incredible carbon-based artificial muscles

(Xinhua) 10:00, November 12, 2024

Scientists from the CAS Institute of Chemistry and Ocean University of China have developed a novel type of artificial muscle that is based on carbon. The research team was inspired by butterfly’s proboscis — the long, tube-like mouth of the insect. The biomimetic materials they’ve fabricated employ a cutting-edge hydrogen-substituted graphdiyne film featuring an asymmetric surface structure. This muscle possesses reversible, swift and continuously adjustable deformation capabilities, akin to a butterfly’s mouth. The motion is triggered by the conversion of carbon bonds.

The scientists have successfully incorporated the artificial muscle into a robotic arm, granting it the ability to swiftly change its position and lift loads up to 11 times heavier than itself. It retains stability and adaptability even at temperatures as low as minus 25 degrees Celsius, according to the study. Additionally, the dimensions of the film are customizable, spanning from about 1 centimeter down to 100 microns. The downsizing of artificial muscles is a significant trend, particularly in the development of micro-medical devices and micro-robots.

The artificial muscle has now been integrated into a real-time tracking system that monitors human finger bending movements. This application has enabled real-time simulation and large-hand-to-small-hand control. The invention shows considerable potential for enhancing smart robotics and advancing precision medicine, said the researchers.