Physicists demonstrate an actual tractor beam in the lab

Physicists demonstrate an actual tractor beam in the lab.

Star-trek-tractor-beam-nader-nazemi

Physicists demonstrate an actual tractor beam in the lab star trek style

Space the Final Frontier … well this is amazing.

It seems like we’re getting closer to the Star Trek future by leaps and bounds these days. We recently learned that a NASA scientist has set his sights on building a warp drive, and now news has come in that a team of physicists have built their own tractor beam in the lab. Now, it’s nothing to get too excited over — they used an optical beam to pull a 30 micrometer silica sphere suspended in water — but the demonstration proved that a tractor beam can actually exist.

But up until this point no one has been able to prove that a Bessel beam can actually function as a kind of tractor beam. So, in an effort to make it work, physicists David Ruffner and David Grier sought to harness a rather unique property of Bessel beams.
Specifically, these laser beams are capable of reconstructing themselves on the opposite side of an object. Subsequently, the theory is that these beams can pull an object back towards the stream of light — not unlike a tractor beam.
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