Researchers develop photochromic active colloids for the development of new smart materials

In nature, the skin of cephalopods (animals with tentacles attached to the head) exhibits unparalleled camouflage ability. Their skin contains pigment groups that can sense changes in environmental light conditions, and they adjust their appearance through the action of pigment cells. Although intricate in nature, this color-changing ability is fundamentally based on a mechanical mechanism in which pigment particles are folded or unfolded under the control of radial muscles.


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