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New Adhesive That Mimics Natures Tricks On The Anvil
January 31, 2008 at 5:33 PM
Research News
According to the researchers, a mere square two centimetres on a side can support 400 grams (close to a pound) of weight. Unlike tape that sticks when it is pressed onto a surface, the new adhesive sticks as it slides on a surface, and releases as it lifts.
The researchers say that this is the trick behind a gecko's speedy vertical escapes, and something very important for any application that requires movement such as climbing. "The gecko has a very sophisticated hierarchical structure of compliant toes, microfibers, nanofibers and nanoattachment plates that allows the foot to attach and release with very little effort," said Berkeley professor Ron Fearing, co-author of the study published online in the Journal of the Royal Society Interface.
"The gecko makes it look simple, but the animal needs to control the directions it is moving its toes--correct movement equates to little effort," he added. Experiments have shown that the new material is also novel in that it gets stronger with use. It tightens its hold as it is rubbed repeatedly against a glass plate.
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