Sol-Gel

Under this section you will find links to the original articles and press releases from hand selected science and technology stories from various online sources.  

November-March  2003

 

Full Solar Spectrum Photovoltaic Materials Identified
A team led by Wladek Walukiewicz, working with researchers at Cornell University, and Ritsumeikan University, Japan, has discovered that, contrary to earlier reports, the band gaps of the In1-xGaxN ternary alloy system extend over a very wide energy range (0.7 eV to 3.4 eV) and thus provide a near-perfect match to the solar energy spectrum. This creates the opportunity to design and fabricate new multijunction solar cells that will have greatly improved efficiencies, possibly reaching the theoretically predicted ultimate efficiencies.
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Molecular Film on Liquid Mercury Reveals New Properties
A team of scientists from the U.S. Department of Energy's Brookhaven National Laboratory, Harvard University, and Bar-Ilan University in Israel have grown ultrathin films made of organic molecules on the surface of liquid mercury. The results, reported in the November, issue of Science, reveal a series of new molecular structures that could lead to novel applications in nanotechnology, which involves manipulating materials at the atomic scale.
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The World’s First Commercial Nanotechnology-Based Solid Lubricant  
Applied NanoMaterials, Inc., a provider of nanotechnology products, start commercializing NanoLub® - the world's first commercial nanotechnology-based solid lubricant. NanoLub particles have a structure of nested spheres that lubricate by rolling like miniature ballbearings.
NanoLub® is based on nanoparticles of inorganic compounds, which were discovered by the Nanomaterials Synthesis Group at Weizmann Institute of Science, Israel, headed by Professor Reshef Tenne
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Energy equals nano … cubed
BASF AG has developed metal-organic "nanocubes" that can store and release hydrogen to power fuel cells for laptop computers and other portable electronic devices, according to Chemical Week.
Source: Small Times
IBM Announces World's Smallest Working Silicon Transistor
IBM announced the world's smallest working silicon transistor. With this transistor IBM has been able to push silicon to limits on a molecular scale not previously achieved.
At six nanometers in length, this new transistor is at least 10 times smaller than the state-of-the-art transistors in production today. 
Source: IBM Research
Joint venture to make ZnSe white LEDs
Sumitomo Electric has teamed up with Procomp to commercialize zinc-selenide (ZnSe) white LEDs. The companies plan to establish a joint venture under the name Supra Opto Inc, with Procomp holding 60% ownership and Sumitomo the remainder. Mass production is expected to begin in March 2003, with a production volume of 1 million units per month, rising to 3.6 million units/month by the end of next year.
Source: Optics.org
Hybrid Plastics' nanomaterials: From inner molars to outer space
While many nanotechnology companies focus on reducing particle sizes, Hybrid Plastics’ products are based on molecular-level chemistry. Called Polyhedral Oligomeric Silsesquioxanes, which the company shortened to POSS, the product is the first new chemical feedstock to be introduced since DuPont launched Kevlar in 1965, Hagstrom said. POSS molecules average about 1.5 nanometers in three dimensions.
Source: Small Times
Oxygen makes nanotube memory
Researchers at the Max Planck Institute in Germany have come up with an alternative method of producing all-semiconducting bundles that, in addition, prepares the microscopic tubes for use in memory devices. The technique allows researchers to oxidize bundles of a few nanotubes or individual nanotubes that measure as small as 2 nanometers in diameter.
Source: TNR News
Production of Cheap, Efficient Nanotech Solar Cells to Begin in Asia
Nanotechnology-based solar cells that could make solar power economically competitive with fossil fuel energy will go into production following an agreement between an American startup and an Asian giant. Japanese-headquartered Matsushita Electric Works has agreed to apply technology developed by Nanosys to produce solar cells for the Asian building market. 
Nanosys is using inorganic nanocrystal and nanocomposite technology to develop high-performing cells that are cheap to produce.
Source: BetterHumans.com

 

 

 

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