The color “ultrablack”—defined as reflecting less than 0.5% of the light that hits it—has a variety of uses, including in cameras, solar panels and telescopes, but it’s difficult to produce and can appear less black when viewed at an angle. Now, a Cornell lab has devised a simple method for making the elusive color. The ultrablack fabric has potential in many solar thermal applications, converting and utilizing absorbed light into thermal energy. “We could actually use the ultrablack fabric for thermo-regulating camouflage,” the researchers said.
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Bird-of-paradise inspires darkest fabric ever made
