Microscopic tractor beams have been in use for years. Now a team of researchers demonstrates a macroscopic tractor beam for the first time.
rays—two things I’ve been trying to dope out and that you’ve been givingsent me complete dope on it—and the Jovians ’ve got ’em both. We’ll havea tractor, too—a pusher or pressor beam.If science fiction had anything to say about it, tractor beams would already be commonplace, and we could thank Star Trek and Star Wars for their proliferation.Microscopic tractor beams are employed in devices called optical tweezers.
Now a team of researchers has successfully demonstrated a macroscopic tractor beam. They published the paper explaining their work in the journal Optics Express. Its title is “” and the lead author is Lei Wang from QingDao University of Science and Technology in China. “Our technique provides a non-contact and long-distance pulling approach, which may be useful for various scientific experiments,” said Wang. “The rarefied gas environment we used to demonstrate the technique is similar to what is found on Mars. Therefore, it might have the potential for one day manipulating vehicles or aircraft on Mars.”
This artist’s illustration shows MSL Curiosity firing its ChemCam laser at a rocky outcropping. If MSL had a tractor beam, it could draw microscopic particles into its onboard lab for deeper study. Image Credit: NASA.
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