Foresight Nanotech Institute Weekly News Digest: April 23, 2008
Discuss these news stories at http://foresight.org/nanodot.
A major nanotechnology challenge in the development of productive nanosystems is the production of molecules to catalyze specific reactions for which no natural catalyst exists. One approach is to use theory to design enzymes, as in the milestone we cited two weeks ago. An alternative is to use molecular evolution to select a molecule with the desired properties. However, this latter approach is very labor intensive. Now lab-on-a-chip technology has been used to automate the evolution of molecules so that this approach might prove useful for nanotech purposes…
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IBM scientists provided a proof-of-concept demonstration of a new type of nanotechnology-enabled computer memory in which magnetic domain walls are moved along a nanowire "racetrack"…
…European nanotechnology researchers have moved a gold cargo about 500 nm along a carbon nanotube 'Monorail'. However, the cargo only moves from the center to one end, instead of from one end to the other, because the motive force is not the electric current applied to the nanotube, as intended, but rather phonons from the heat generated by the current…
Using nanotechnology to control the spin of a single electron in a carbon nanotube might lead to replacing conventional semiconductor transistors with a carbon nanotube or single molecule…
Now comes a report that nanotechnology using a molecular-scale switch could enable storing half a petabyte on one square inch. This nanotech advance uses a polyoxometalate (POM) molecular cluster that can be reversibly interconverted between two electronic states…
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