Nanowire Sales
Posted by admin on Jun 20, 2010 in Nanowire Sales | 0 comments
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Welcome to Nanowire Sales. A nanowire is a nanostructure, with the diameter of the order of a nanometer (10−9 meters). Alternatively, nanowires can be defined as structures that have a thickness or diameter constrained to tens of nanometers or less and an unconstrained length. At these scales, quantum mechanical effects are important — which coined the term “quantum wires”.
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The nanowires could be used, in the near future, to link tiny components into extremely small circuits. Using nanotechnology, such components could be created out of chemical compounds.
A nanowire battery is a lithium-ion battery invented by a team led by Dr. Yi Cui at Stanford University in 2007. The team’s invention consists of a stainless steel anode covered in silicon nanowires, to replace the traditional graphite anode. Silicon, which stores ten times more lithium than graphite, allows a far greater energy density on the anode, thus reducing the mass of the battery. The high surface area further allows for fast charging and discharging.
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Longest Nanowires May Lead To Better Fuel Cells
Posted by admin on Aug 24, 2010 in Recent Posts | 0 comments
Longest Nanowires May Lead To Better Fuel Cells
We are searching for the alternative energy which can conveniently be used for our industrial and everyday purposes. Wind, water, geothermal and many other alternative energy sources are good and clean and green. But all of them lack one thing or another and don’t seem commercially viable. Researchers all over the world are trying to find solutions for this impending and inevitable energy crisis. Scientists from University of Rochester are trying to do the same thing. They are aiming to produce longest platinum nanowires. This feat has not been achieved by anyone. These longest platinum nanowires could make an impact on the development of fuel cells for cars, trucks and other devices. The wires, 1/50,000 the width of a human hair, are thousands of times longer than any previously made, according to a report in Nano Letters.
James C. M. Li who is the professor of mechanical engineering at the University of Rochester, states, “People have been working on developing fuel cells for decades. But the technology is still not being commercialized. Platinum is expensive, and the standard approach for using it in fuel cells is far from ideal. These nanowires are a key step toward better solutions.”
These platinum nanowires are better for the longevity and efficiency of fuel cells. Till now these nanowires are utilized in the spacecrafts only. Now team of researchers at University of Rochester are of the view that platinum nanowires can be exploited as modes of transport fuel. “Our ultimate purpose is to make free-standing fuel cell catalysts from these nanowires,” says Li. This discovery would reduce the consumption of conventional fuels.
Fuel cells require catalysts that can facilitate the reaction of hydrogen and oxygen. This will split the compressed hydrogen fuel into acidic hydrogen ion and release the electrons. These electrons are diverted into an external circuit to provide energy. What happened to the hydrogen ions? Those hydrogen ions combine with electrons and oxygen to create the byproduct in the form of liquid or vaporous water.
Platinum has been the chief substance utilized as catalysts in making fuel cell because platinum has the ability to endure the harsh acidic environment inside the fuel cell. Platinum’s energy efficiency is also considerably greater than that of cheaper metals like nickel.
The efficiency of the catalysts in increased by maximizing the exposed surface area of platinum nanoparticles. The technology has already been used or nanocomputers and other nano devices. The big difference in the platinum nanowires produced by Li and his graduate student Jianglan Shui is that by a process known as electrospinning they have produced platinum nanowires that are thousands of times longer than any previous such wires.
Making such nanowires is a highly challenging task. “The reason people have not come to nanowires before is that it’s very hard to make them,”
Oakley Men’s Nanowire 4.0 Iridium Polarized Sunglasses,Burnt Copper Frame/VR28 Black Lens,one size
Posted by admin on Aug 11, 2010 in Recent Posts | 1 comment
Oakley Men’s Nanowire 4.0 Iridium Polarized Sunglasses,Burnt Copper Frame/VR28 Black Lens,one size
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Oakley crafted the Nanowire 4.0 Polarized Sunglasses with a high quality titanium alloy and its high Definition Optics for a light weight and glare-reducing performance, whether you’re on the slopes or the water. The Nanowire’s titanium memory metal provides a flexible and adaptable fit, and the Unobtanium pads increase their grip when you sweat. The hydrophobic coating repels water, dust, dirt and skin oils, and an Iridium lense coating balances light transmission and filters 100% of UV rays.
Rating: List Price: $ 300.00 Price: $ 300.00
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