University of Michigan News Service | 'Perfect black' coating can render a 3D object flat, raises intriguing dark veil possibility in astronomy
http://ns.umich.edu/new/releases/20088-perfect-black-coating-can-render-a-3d-object-flat-raises-intriguing-dark-veil-possibility-in-astronomy
The 70-micron coating, or carbon nanotube carpet, is about half the thickness of a sheet of paper. It absorbs 99.9 percent of the light that hits it, researchers say.