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Crawling, Spider-Like 'Robot' Powered by Moisture
Researchers from Jilin University in China treated a sheet of graphene oxide with brief exposure to an off-the-shelf camera flash, turning it into a material that bends when exposed to moisture. They then used this material to make a spider-like crawler and claw robot that moves in response to changing humidity, without the need for any external power. They demonstrated that their method is repeatable and the simple robots they created have good stability. The material's biocompatibility could allow moisture-responsive graphene oxide to be used in organ-on-a-chip systems that simulate the mechanics and physiological response of entire organs and are used for drug discovery.
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