At University of Pennsylvania in the mechanical engineer Igor Bargatin’s lab, Mohsen Azadi and his team were able to successfully demonstrate levitation of an object using light. Team built a "nanocardboard,” a material that’s as thin as a few strands of DNA and weighs less than a thousandth of a gram, but stiff enough to resist flopping for levitation. Crookes radiometer - also known as a light mill, the instrument is essentially a glass bulb under partial vacuum with paper vanes that are b...