News tagged with visible spectrum
LED closes the yellow gap: Full conversion of blue into amber light by new nitride phosphor
(PhysOrg.com) -- Monochromatic light-emitting diodes cover a large part of the visible spectrum with high effi-ciency. For blue light, nitride diodes achieve external quantum efficiencies in excess of 65%, ...
Jul 23, 2009 |
4.8 / 5 (8) |
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New 'broadband' cloaking technology simple to manufacture
(PhysOrg.com) -- Researchers have created a new type of invisibility cloak that is simpler than previous designs and works for all colors of the visible spectrum, making it possible to cloak larger objects ...
May 20, 2009 |
4.9 / 5 (26) |
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Carbon nanotube device can detect colors of the rainbow
Researchers at Sandia National Laboratories have created the first carbon nanotube device that can detect the entire visible spectrum of light, a feat that could soon allow scientists to probe single molecule ...
Nanotechnology / Nanomaterials
Apr 30, 2009 |
5 / 5 (3) |
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Discovery of an Unexpected Boost for Solar Water-Splitting Cells
(PhysOrg.com) -- A research team from Northeastern University and the National Institute of Standards and Technology has discovered, serendipitously, that a residue of a process used to build arrays of titania ...
Nanotechnology / Nanomaterials
Apr 22, 2009 |
5 / 5 (22) |
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Dark matter: Physicists may have found piece of the puzzle
European astronomers said on Wednesday that an anomalous energy signal detected by an orbiting satellite could be a telltale of the enigmatic substance known as dark matter.
Apr 01, 2009 |
3.9 / 5 (27) |
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