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Read how it works here: Here we demonstrate an effect which looks like the classic “tractor beam“ seen in science fiction films and tv shows. We have made pieces of thin graphene which can levitate over a bed of rare earth permanent magnets and can be ’pushed’ around or made to spin using a handheld, focusable 5mW 390-405nm laser beam. The phenomenon demonstrates visibly how it is possible to convert light, either from a lase
