‘Tractor beam’ technology advances

Posted on September 3, 2005 

‘Tractor beam’ technology advances

A “tractor beam” that can reach out, trap and move objects has been developed by British scientists.

But while fictional tractor beams of the kind depicted in Star Trek can ensnare a giant spaceship, this real version works only at the microscopic level.

The beam consists of a helix of twisting laser light, which is able to seize hold of objects as small as a protein molecule.

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