For years lasers have been used as tweezers, but this is a new approach to using a laser as an attractive force. In a paper titled, “Experimental demonstration of optical transport, sorting and self-arrangement using a ‘tractor beam’”, the authors are able to experimentally demonstrate the pulling and rotation of microparticles, simply by altering the angle and polarization of light. All I care about is when I get to say, “Engage the Tractor Beam. ” Star Trek fans rejoice (again)!
