The applications of ultrathin, conductive films such as those made of graphene have many applications, but it's been thought ...

“We’ve achieved a luminescent concentration ratio greater than 30 with an optical efficiency of 82-percent for blue photons,” says Berkeley Lab director Paul Alivisatos, who is also the Samsung ...

The light trap: The set-up comprises a partially transparent mirror, a thin, weak absorber, two converging lenses and a totally reflecting mirror. Due to precisely calculated interference effects, the ...

Materials get their optical properties based on how much they reflect, absorb or transmit different wavelengths (colors) of light. Usually optical coatings either reflect or transmit a given color of ...

Just when scientists thought they knew everything about crystals, a Northwestern University and University of Wisconsin-Madison collaboration has uncovered a hidden secret. Centrosymmetric crystals ...

VANCOUVER, British Columbia — Recently, University of British Columbia (UBC) scientists discovered a super-black material that absorbs 99% of light. The new material, which is composed of wood, could ...

There's black, and then there's super-black. A new super-black wood-based material has been created that absorbs more than 99 percent of the light that hits it. What's more, the material was ...

The filter is an indispensable optical component in photography, which can change the spectral intensity distribution of the incident light or change its polarization state according to the ...