Like most technologies, work on solar devices has proceeded in generational waves. First came bulk silicon-based solar cells built with techniques that borrowed heavily from those used to make computer chips. Next came work ...
Energy & Green Tech
Aug 31, 2010
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(PhysOrg.com) -- Circuits that can perform logic operations at the push of a button are a dime-a-dozen these days, but a breakthrough by researchers in the USA has meant they can be smaller and simpler than ever before. Using ...
Nanomaterials
Aug 5, 2010
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Call it the anti-sunscreen. That's more or less the description of what many solar energy researchers would like to find -- light-catching substances that could be added to photovoltaic materials in order to convert more ...
Nanomaterials
Aug 3, 2010
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Drive through the University of Tennessee in Knoxville on a sunny day, and you may see a man on the side of the road pruning the English ivy.
Nanomaterials
Aug 3, 2010
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Swiss researchers have succeeded in growing sea-urchin shaped nanostructures from minute balls of polystyrene beads using a simple electrochemical process. The spines of the sea urchin consist of zinc oxide nanowires. The ...
Nanomaterials
Jul 29, 2010
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When Mingjun Zhang was watching his son play in the yard, he was hit with a burning question: "What makes the ivy in his backyard cling to the fence so tightly?"
Bio & Medicine
Jul 19, 2010
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(PhysOrg.com) -- Outlet vampires (n). Definition: People with laptop computers who stare hungrily at the walls of airports, train stations, and bus depots, searching for an electrical outlet to power their computer.
Materials Science
Jun 8, 2010
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(PhysOrg.com) -- Scientists have no problem making a menagerie of nanometer-sized objects -- wires, tubes, belts, and even tree-like structures. What they sometimes have been unable to do is explain precisely how those objects ...
Nanomaterials
Apr 22, 2010
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Scientists are reporting that particle size affects the toxicity of zinc oxide, a material widely used in sunscreens. Particles smaller than 100 nanometers are slightly more toxic to colon cells than conventional zinc oxide. ...
Bio & Medicine
Apr 7, 2010
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By combining a new generation of piezoelectric nanogenerators with two types of nanowire sensors, researchers have created what are believed to be the first self-powered nanometer-scale sensing devices that draw power from ...
Nanophysics
Mar 28, 2010
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