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GreenLight News
Making the light right for LEDs
Jan 1, 2011 — We’ve all experienced it. When we look over the meat display at the supermarket, all the cuts are a mouth-watering red. However, once in the cart, the meat is a different shade of red. Why? Because the appearance of color depends on the light source. However, the lack of color consistency with LEDs is a problem that a new lab at the National Institute of Standards and Technology (NIST) in Boulder, Colo., is seeking to correct. “[LEDs are] what we’ll likely use in the fu...
Mimicking nature to build a better solar cell
Dec 1, 2010 — Leaves are nature’s quick-change artists. In summer, dressed in hues of green, they convert sunlight into chlorophyll, take in carbon dioxide and expel oxygen. Come fall – in northern latitudes, anyway – they turn from...
Will LEDs lead to a greener world? Maybe
Nov 1, 2010 — Conventional wisdom says that replacing the power-hungry incandescent bulb with compact fluorescent bulbs or LEDs that are more efficient will lead to a reduced demand for electric power and the eventual shuttering of polluting power plants, making...
University solar farm is live PV test bed
SHEFFIELD, UK – This year’s summer solstice marked the launch of a solar farm project that will provide benchmark, real-world testing of photovoltaics (PVs) in northerly latitudes such as the UK. The Sheffield Solar Farm, a 70-m2 state-of-the-art installation...
Erasing carbon’s footprint with sunshine
Oct 5, 2010 — The key to rolling back climate change could be the sun, according to George Washington University researchers who have demonstrated a carbon capture process that promises to use solar power to remove carbon dioxide from the air. As a bonus, the...
Solar design triumphs through thick and thin
Sep 1, 2010 — The quest for high power-conversion efficiency in most thin-film solar cells has often been hindered by the “thick and thin” challenge, in which a cell must be thick enough to collect a sufficient amount of light, yet thin enough to...
Agriculture goes greener with imaging
WAGENINGEN, Netherlands – Machine vision technologies can help improve food production right at its roots by helping farmers identify and kill weeds in their fields. Researchers at Wageningen University have developed a system that automatically does just that; such a system...
For better LEDs, two V’s could mean victory
Aug 1, 2010 — For light-emitting diodes, a brighter, more efficient and groovier future may be at hand. The result could be billions of dollars of annual energy savings, say researchers from the National Institute of Advanced Industrial Science and Technology...
Sustainable photonics: A perspective
Aug 1, 2010 — The photonics industry is involved in nearly every facet of a sustainable future. Photonics technology is at the heart of solar energy and remote sensing. Photonic devices are used in biodiesel production, water purification, wind energy (through...
Thermal cameras assist solar contractors
Jul 1, 2010 — Solar service and installation companies have known for some time that high-performance thermal cameras, capable of detecting very small temperature differences and of creating crystal clear images or video of problem areas, had enormous potential...
Frog’s foam fashions fuel
Jun 7, 2010 — With the inevitable decline of fossil fuels, the race is on to discover renewable energy solutions. As an alternative, researchers from the University of Cincinnati have found a way to convert solar energy and carbon dioxide into sugars to create...
Leaves teach technical lessons
Jun 7, 2010 — Scientists have introduced a design for an artificial inorganic leaf that can capture solar energy and use it efficiently to change water into hydrogen fuel, an environmentally friendly alternative to nonrenewable fossil fuels such as coal, oil and...
Solar energy receives a boost from UK government
SOUTHAMPTON, UK – The feed-in tariffs for renewable energy recently introduced by the government heightened interest at the sixth Photovoltaic Science Application and Technology Conference (PVSAT-6), hosted by the University of Southampton’s School of...
Argonne offers integrated approach
May 10, 2010 — Researchers anticipate that the world’s energy needs will double by 2050. To help meet these ballooning needs, the US Department of Energy (DoE)’s Argonne National Laboratory in Illinois recently launched an Alternative Energy &...
LED streetlights shine in cradle-to-grave study
May 10, 2010 — Researchers at the University of Pittsburgh have conducted the first cradle-to-grave assessment of LED streetlights. The report revealed that, compared with other options, the increasingly popular lamps strike the best balance between brightness,...
Water purification – ultraviolet style
May 10, 2010 — Created by industrial designer Olivia Blechschmidt, the STER UV portable water sterilization device is tailored to the home kitchen environment. The tool aims to provide an effective alternative to boiling water in the home for those affected by...
Backlighting fusion
Apr 12, 2010 — Harnessing fusion energy requires achieving the milestone of fusion ignition in the laboratory. At Lawrence Livermore National Laboratory’s National Ignition Facility in Livermore, Calif., researchers are attempting indirect drive inertial...
From tobacco to energy
Apr 12, 2010 — Tobacco farmers, faced with fewer traditional buyers for their crops, are looking to the solar industry for income. Plants such as tobacco are sunlight collectors with many similarities to solar cells. Now, a group of scientists is trying to take...
Improving solar module manufacturing with imaging
GROßRÖHRSDORF, Germany – In-line metrology systems developed by industrial vision specialist Basler Vision Technologies have been integrated into the production line of solar module manufacturer Sunfilm AG at its Großröhrsdorf plant near Dresden. The company is...
LED market: Looking good
Apr 12, 2010 — High-brightness LEDs are everywhere. From general lighting to outdoor displays and signage, notebook and television displays, automotive applications and industrial lighting, it’s no wonder that the market for them is booming. According...
Solar inspection mixes sound with imaging
Apr 12, 2010 — Solar manufacturers have a few technologies at their disposal that can detect cracks in cells and modules. In an industry where energy efficiency is the name of the game, manufacturers want to reduce or eliminate cracks to improve yield, reduce...
Peptides do windows
Mar 18, 2010 — Nobody really likes washing windows. And dirt and grime – the kind you find on windows – are the bane of a solar panel’s existence. The good news is that a group of researchers at Tel Aviv University in Israel, which set out originally to find a...
Restoring vision with photovoltaic optoelectronics
Mar 18, 2010 — As life expectancy increases, our eyes bear the brunt of aging; many of the elderly suffer from vision problems. One of the leading causes of eye problems in the Western world is macular degeneration. To correct this, retinal implants, generally...
Sensing the rain
Mar 18, 2010 — The Tropical Rainfall Measuring Mission (TRMM) is a project run jointly by NASA and the Japan Aerospace Exploration Agency to monitor and study tropical rainfall. When tropical cyclone Laurence hit Australia in December 2009, TRMM determined that...
Imaging PV cells
Feb 28, 2010 — Researchers and manufacturers of concentrated photovoltaic (CPV) cells have recently achieved record solar cell conversion efficiencies of 41 percent by overlaying three semiconduc...
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June 2024
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