SCIENCE - Team demonstrates gels that can be moved, controlled by light

(Phys.org) —Some animals—like the octopus and cuttlefish—transform their shape based on environment, fending off attackers or threats in the wild. For decades, researchers have worked toward mimicking similar biological responses in non-living organisms, as it would have significant implications ...

http://phys.org/news/2013-08-team-gels.htm