Image: A metre long ribbon of a carbon nanotube 'aerogel' that could make a robust artificial muscle. This ribbon more than trebles its width when a voltage is applied (Image: Ray Baughman)
From The New Scientist:
A new material that is weight for weight stronger than steel and stiffer than diamond, and weighs little more than its volume in air, could be the perfect artificial muscle for robots.
"We've made a totally new type of artificial muscle that is able to provide performance characteristics that have not previously been obtained," says Ray Baughman, a materials scientist at the University of Texas, Dallas, and co-developer of the new muscle.
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