Laser Tractor Beam Now A Possibility?
Using a Bessel Beam, a group of physicists foresee the realization of an age-old sci-fi device.
From its inception in 1920s science literature, tractor beams – devices with the ability to attract objects from a distances, have always been thought of as fictional. However, a group of physicists have found a potential way to create one using a Bessel Beam. In their paper titled Backward Pulling Force from a Forward Propagating Beam, physicists Jun Chen, Jack Ng, Zhifang Lin, and C. T. Chan argue that a Bessel beam contains properties that make attractive optical force possible.
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