from the snap-to-it dept.
Researchers have used the Van der Waals attraction between two closely spaced perpendicular nanotubes to give the pair two stable mechanical states. In one state the tubes are well separated and unstrained, while in the second they are in close contact and the attraction between them bends the upper tube, holding them together. They were able to both switch between the states and sense them electronically. They calculate potential switching rates of 100GHz and densities of 1012 bits/cm2
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