from Wired: Science by Alexis Madrigal
A new nanoassembly technique could make chameleon-like camouflage possible.
By using specially-designed proteins as nanomotors, Sandia National Laboratory researchers have created a system that can assemble quantum dots into bright, fluorescent rings.
If these quantum dots were embedded on the surface of an object, the formation of the rings would cause the object to change color to the eye. Reverse the process and the color would change back. That raises the possibility of fast color changes of the sort that some animals use to blend in with their environments.