Whizzing polymers

 作者:饶茼     |      日期:2019-03-07 08:04:10
Researchers in Japan have developed a gel-based “soft” motor that could be used to generate tiny amounts of electrical power, with the potential to run micromachines. Yoshihito Osada and his colleagues at Hokkaido University filled an absorbent strip of polystearile acrylate gel with alcohol and pierced holes in the opposite faces of each end. When the strip was floated on water, the alcohol escaped from the holes and spread out, forcing the strip to rotate at up to 400 revolutions per minute. By attaching small magnets to each end of the strip,