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"Scientists have engineered perhaps the whitest natural substance, using the same physics behind one ghostly white Southeast Asian beetle. White and black feel like opposites for a reason. Black-colored things absorb nearly all of the light that strikes their surface, while white things send the light back, scattered equally at all wavelengths. A team of European scientists have essentially created the whitest paper using this physical property." 
Gywoodlands's comment,
January 4, 2021 3:42 AM
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Scoop.it!
"Researchers at the University of California at Berkeley announced today that they have developed an ultra-thin material that can change color on demand by bouncing back light on the nanoscale level. Well, the on-demand element is a little more nuanced. The “chameleon skin” material actually changes color when flexed, or when a small amount of force is applied to the surface."
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Scoop.it!
"Inspired by the way iridescent bird feathers play with light, scientists have created thin films of material in a wide range of pure colors — from red to green — with hues determined by physical structure rather than pigments. Structural color arises from the interaction of light with materials that have patterns on a minute scale, which bend and reflect light to amplify some wavelengths and dampen others. Melanosomes, tiny packets of melanin found in the feathers, skin and fur of many animals, can produce structural color when packed into solid layers, as they are in the feathers of some birds. “We synthesized and assembled nanoparticles of a synthetic version of melanin to mimic the natural structures found in bird feathers,” said Nathan Gianneschi, a professor of chemistry and biochemistry at the University of California, San Diego. “We want to understand how nature uses materials like this, then to develop function that goes beyond what is possible in nature."
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