If you want to hit your target, you need three things: a gun, a target and a method by which to hit that target with that gun ...
Over the past few decades, engineers have developed various devices that can create holograms, three-dimensional (3D) or ...
† Department of Physics and Astronomy and Nano/Bio Interface Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States ‡ Monell Chemical Senses Center, Philadelphia, ...