Painting with Light: Novel Nanopillars Precisely Control the Color and Intensity of Transmitted Light
Published:10 Sep.2020    Source:NIST

By shining white light on a glass slide stippled with millions of tiny titanium dioxide pillars, researchers at the National Institute of Standards and Technology (NIST) and their collaborators have reproduced with astonishing fidelity the luminous hues and subtle shadings of “Girl with a Pearl Earring,” Dutch artist Johannes Vermeer’s masterpiece.

 
The approach has potential applications in improving optical communications and making currency harder to counterfeit.