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Technology

Patterned silica layer allows solar cell to cool itself

By adding a specially patterned layer of silica glass to a solar cell, a team of researchers from Stanford University have improved its ability to transform sunlight to clean energy. Solar cells are at the core of solar power technology, but even the best designs convert only a fraction of the energy they absorb from the sun into usable electricity. Part of the reason for this loss of energy is due to solar cells overheating. Under normal operating con...

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Minimizing the glare of L.E.D. lights for safer night time driving

While the use of light emitting diode technology or L.E.D.s are rising – mostly due to their energy-efficiency – there is some concern that the harsh glare of L.E.D. lights could be a safety concern. A team of researchers from China and the Netherlands have become the first to look into and evaluate the effect of the levels of discomfort glare – the urge to look away from a bright light – in L.E.D. road lights. While our vision can adapt to the surrounding...

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More arctic lakes, more carbon storage?

Thermokarst lakes – created when permafrost melts – are soaking up carbon from the atmosphere. New research from the University of Alaska Fairbanks is contradicting the commonly held notion that melting permafrost is destroying the artic landscapes ability to act as carbon sinks. Thermokarst lakes are created when melting permafrost leaves surface depressions filled with melted fresh water. More and more of these lakes are dotting the artic landscape due to...

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Jumping water droplets – generating power anywhere

The next-generation of cellphones and other personal gadgets could be powered by water droplets. A team of researchers from the Massachusetts Institute of Technology have developed – and successfully demonstrated – a process by which they can generate small amounts of electricity from the movement of water molecules. Postdoc Nenad Miljkovic and associate professor of mechanical engineering Evelyn Wang and their team built their process using...

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Sand used for better lithium ion battery

A new low cost way to improve the performance of lithium ion batteries has been developed to the University of California, Riverside. The key is, to add a little sand. Sand. Yes, sand. The stuff you find on your hair and clothing after a trip to the beach is the key to the creation of the lithium ion battery that can outperform the current industry standard by three times. “This is the holy grail – a low cost, non-toxic, environmentally friendly way to pro...

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One-step chemical mix reduces reflectivity of silicon for better light absorption

In just one-step, researchers from Rice University have found a way to improve the efficiency of solar cells. Chemist Andrew Barron has developed a technique to etch nanoscale spikes into silicon that allows more than 99 percent of sunlight to reach the cells’ active elements where it can then be turned into electricity. Mr. Barron, along with Rice graduate student Yen-Tien Lu, has simplified the two-step process that...

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Various aspects of green web designing that will aid an entrepreneur

For any business organization, it is important to have a web presence to generate traffic and yield high profit. Of late, the entrepreneurs across different areas of work have taken initiatives to contribute positively to the environment and make this earth a better place to live for the ecology. A recent trend has been noticed in the rise of the eco-friendly websites and also hosting services. Well, green websites or...

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Fuel cell runs on fossil fuels for cleaner power

The transportation sector has an emissions problem. The use of fossil fuels to power vehicles causes massive amounts of pollution and contributes to climate change. A new fuel cell developed at Washington State University is looking to solve the problem of burning fossil fuels by. . . using fossil fuels. Professors Su Ha and M. Grant Norton in the Voiland College of Engineering and Architecture have developed a fuel cell that can...

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Floating wind turbine captures stronger winds for more clean power

A new, floating wind turbine design could bring clean, renewable power to off-grid areas. Alumni of the Massachusetts Institute of Technology, Ben Glass and Adam Rein, have launched a start-up called Altaeros which will develop the world’s first commercial airborne wind turbine. Their Buoyant Air Turbine, or B.A.T., uses a helium-filled shell - made of the same fabric used in blimps and sails - to hover around...

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Nickel and iron used to create faster, cheaper biofuel process

By using a new, metal-based nanoparticle, scientists at the United States Department of Energy’s Ames Laboratory are able to simplify the creation of biofuel from oil and fats. The Ames scientist use their nanoparticle to create green diesel, an alternative created from the hydrogenation of oils from renewable feedstocks like algae. Currently, oil from renewable feedstocks is used for fuel by reacting...

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