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Technology update

Feb 9, 2007

Thermal tweezers make their debut

Random Brownian forces could be used to trap and manipulate nanoparticles on surfaces in the presence of laser radiation, according to calculations by optical physicists in Australia. This is a surprising result since Brownian forces are usually detrimental for optically trapping particles smaller than 100 nm. The "thermal tweezers" could be used in nanofabrication techniques with nanoscale resolution, as well as in imaging and re-writable surface memory elements.

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