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Keyword: refractiveindex

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  • None more black - Engineers make the most anti-reflective coating yet.

    03/02/2007 11:59:22 PM PST · by neverdem · 17 replies · 1,987+ views
    news@nature.com ^ | 1 March 2007 | Dave Mosher
    Close window Published online: 1 March 2007; | doi:10.1038/news070226-11 None more blackEngineers make the most anti-reflective coating yet.Dave Mosher Layers of tilted silicon nanorods make a soft landing for light.Fred Schubert/Rensselaer Polytechnic Institute Shiny metal objects have been reduced to a dull, record-breaking black by a super anti-reflective coating. As Nigel Tufnel from This is Spinal Tap says in the film: "It's like, how much more black could this be? And the answer is none. None more black." Today's anti-reflective coatings reduce the reflectivity of an object to less than 1%, which is pretty good. But they often miss...
  • New Nanocoating Is Virtual Black Hole for Reflections

    03/01/2007 5:08:54 PM PST · by LibWhacker · 71 replies · 1,703+ views
    A team of researchers from Rensselaer Polytechnic Institute has created the world’s first material that reflects virtually no light. Reporting in the March issue of Nature Photonics, they describe an optical coating made from the material that enables vastly improved control over the basic properties of light. The research could open the door to much brighter LEDs, more efficient solar cells, and a new class of "smart" light sources that adjust to specific environments, among many other potential applications.Most surfaces reflect some light — from a puddle of water all the way to a mirror. The new material has almost...