Nano Dandelions: Bundles of cysteine-lead nanowires spread into highly oriented structures

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Under an electron microscope they look like dandelions. In the journal Angewandte Chemie, Xiao-Fang Shen and Xiu-Ping Yan explain their nanoscopic bouquets: They consist of spread-out bundles of nanowires made of lead and the amino acid l-cysteine. The Chinese researchers have discovered a new, cost-effective method by which ordered nanostructures can be produced on a large scale, at room temperature, and under atmospheric pressure.


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All News summaries from General Science news
All News summaries for September 03, 2007

Milk may help bacteria survive against low levels of antibiotics

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Milk may help prevent potentially dangerous bacteria like Staphylococcus from being killed by antibiotics used to treat animals, scientists heard today at the Society for General Microbiology's Autumn meeting being held this ...

Living sensor can warn of arsenic pollution

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Scientists studying arsenic pollution have discovered a living sensor that can spot contamination. They have also discovered new bacteria that can clean up arsenic spills even in previously untreatable cold areas, microbiologists ...

How plants fine tune their natural chemical defenses

Sep 07, 2008 | User rating: not rated yet
Even closely related plants produce their own natural chemical cocktails, each set uniquely adapted to the individual plant's specific habitat. Comparing anti-fungals produced by tobacco and henbane, researchers at the Salk ...

Understanding Algae As An Alternative Fuel Source: Will The Real Algae X Please Stand Up

Sep 07, 2008 | User rating: not rated yet
The recent creation of AXI, LLC is an alliance between Allied Minds, Inc. a seed investment company and the University of Washington. The alliance came about because of Professor Rose Ann Cattolico PhD, an ...

How you spend affects how much you spend: Non-cash purchases found to be higher than cash buys

Sep 07, 2008 | User rating: not rated yet
There is fresh evidence that people spend less when paying cash than using credit, cash-equivalent scrip or gift certificates. They also spend less when they have to estimate expenses in detail. These findings appear in the ...