News tagged with wavelength spectrum
Robust approach for preparing polymer-coated quantum dots
Quantum dots (QDs) are tiny crystals of semiconducting material that produce fluorescence. The color or the wavelength of the fluorescence is dependent on the size, shape and composition of QDs. Larger QDs ...
Nanotechnology / Nanomaterials
Mar 01, 2012 |
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Experts reveal how plants don't get sunburn
(PhysOrg.com) -- Experts at the University of Glasgow have discovered how plants survive the harmful rays of the sun.
Feb 10, 2012 |
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Scientists design solar cells that exceed the conventional light-trapping limit
(PhysOrg.com) -- The best performing solar cells are those that are thick enough to absorb light from the entire solar spectrum, while the cheapest solar cells are thin ones, since they require less, and potentially ...
Jan 20, 2012 |
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NASA's NPP satellite acquires first VIIRS image
The Visible Infrared Imager Radiometer Suite (VIIRS) onboard NASA's newest Earth-observing satellite, NPP, acquired its first measurements on Nov. 21, 2011. This high-resolution image is of a broad swath of ...
Space & Earth / Space Exploration
Nov 22, 2011 |
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A single polymer can be used to fabricate both thin-film transistors and solar cells
Polymers are the material of choice for making thin-film transistors and solar cells. They are also potentially suitable for manufacture using economical, high-throughput techniques, such as roll-to-roll and inkjet printing ...
Nov 17, 2011 |
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Solar power could get boost from new light absorption design
Solar power may be on the rise, but solar cells are only as efficient as the amount of sunlight they collect. Under the direction of a new professor at Northwestern University's McCormick School of Engineering and Applied ...
Nanotechnology / Nanomaterials
Nov 02, 2011 |
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Researchers change the color and shape of a single photon
(PhysOrg.com) -- A team of researchers from the CNST and ITL has simultaneously changed the color and shape of a single photon, the smallest unit of light.
Oct 06, 2011 |
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Saturn's geyser moon Enceladus shows off for Cassini
(PhysOrg.com) -- NASA's Cassini spacecraft successfully completed its Oct. 1 flyby of Saturn's moon Enceladus and its jets of water vapor and ice. At its closest approach, the spacecraft flew approximately ...
Space & Earth / Space Exploration
Oct 04, 2011 |
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Astronomers reveal a cosmic 'axis of evil'
(PhysOrg.com) -- Astronomers are puzzled by the announcement that the masses of the largest objects in the Universe appear to depend on which method is used to weigh them. The new work was presented at a specialist ...
Jun 30, 2011 |
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Clouds' effect on sunlight energy at Earth's surface depends on the wavelength of light
Bouncing around from cloud to cloud, and down to Earth, sunlight's warmth is both enhanced and blocked by clouds. Atmospheric scientists from Pacific Northwest National Laboratory found that clouds' overall ...
Space & Earth / Earth Sciences
May 09, 2011 |
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Trapping a rainbow: Researchers slow broadband light waves with nanoplasmonic structures
A team of electrical engineers and chemists at Lehigh University have experimentally verified the "rainbow" trapping effect, demonstrating that plasmonic structures can slow down light waves over a broad range of wavelengths.
Mar 14, 2011 |
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New inexpensive solar cell design
One of the most promising technologies for making inexpensive but reasonably efficient solar photovoltaic cells just got much cheaper. Scientists at the University of Toronto in Canada have shown that inexpensive nickel can ...
Nanotechnology / Nanomaterials
Aug 03, 2010 |
4.8 / 5 (15) |
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What makes the giant freak wave 'stable'
The dreaded giant freak wave that can appear on the open sea out of nowhere, can now for the first time be theoretically calculated and modelled. Researchers at Umea University and the Ruhr-Universitat Bochum in Germany have ...
Jun 18, 2010 |
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Seeing the Invisible
(PhysOrg.com) -- Astronomers, like physicians, use as much of the electromagnetic spectrum as they can, from X-ray to radio wavelengths, to examine their subjects the with the most suitable diagnostics.
May 17, 2010 |
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Scientists reveal how snakes 'see' at night
Scientists revealed Sunday for the first time how some snakes can detect the faint body heat exuded by a mouse a metre (three feet) away with enough precision and speed to hunt in the dark.
Mar 15, 2010 |
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