Tuesday, November 22, 2011
Perfect black coating can render a 3D object flat, raises intriguing dark veil possibility in astronomy
Perfect black coating can render a 3D object flat, raises intriguing dark veil possibility in astronomy: To demonstrate this concept, the researchers made a raised, microscopic tank shape on a piece of silicon. They then grew the carbon nanotube carpet on top of the entire silicon chip. In photos taken through an optical microscope, they show that the tank is imperceptible. As a control, they did this again, carving out a rectangle that was not coated with carbon nanotubes. The rectangle is visible on this chip, but the tank remains hidden.