Author: Maria Temming / Source: Science News

To craft a new color-switching material, scientists have again taken inspiration from one of nature’s masters of disguise: the chameleon.
Thin films made of heart cells and hydrogel change hues when the films shrink or stretch, much like chameleon skin. This material, described online March 28 in Science Robotics, could be used to test new medications or possibly to build camouflaging robots.
The material is made of a paper-thin hydrogel sheet engraved with…
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