Soft matter exhibiting angle-independent structural colors

Chameleon skin and some type of fish skin are regarded as the prototype of structurally colored materials that change their color appearance upon external stimuli, which can be light and dark transitions or other environmental factors. In artificial structurally colored soft materials, temperature variation can be the stimulus, causing the swelling or shrinking of the structure. Yukikazu Takeoka and his colleagues from Nagoya University have created a hydrogel templated on amorphous arrays of fi