Foresight Nanotech Institute Weekly News Digest: August 6, 2008
Discuss these news stories at http://foresight.org/nanodot.
A major advance in mimicking protein function has been made by scientists working with peptoids—polymers that resemble proteins except that the polymer backbone has monomer side groups attached to nitrogen atoms rather than to alpha-carbon atoms, as in proteins…
Technologically important properties of some nanostructures—for example, certain complex metal oxide crystals—dependent strongly on knowing atomic positions very precisely—to within a few percent of an atomic diameter. A recent review describes the advantages to nanotech of advances in electron microscopy that allow mapping electron states localized at or between atoms, when coupled with extensive quantum-mechanical calculations…
The recently demonstrated ability to visualize individual atoms of carbon and hydrogen on a graphene surface opens new avenues for studying the behavior of hydrocarbon chains…
Now, a double-walled carbon nanotube forms a device able to weigh a single atom of gold. Unlike other tools of comparable sensitivity, the new nanotube mass sensors are small enough to be a components of nanoscopic systems, and they do not have to ionize or destroy molecules to measure their masses…
A novel toroidal-shaped nanoparticle provides a nanotech way to image blood clots without using magnetic resonance imaging contrast agents that are toxic to some patients…
—Nanodot posts by James Lewis
November 15-16, 2008
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