By using a supersonic nozzle more commonly found at the business end of rocket and jet engines, researchers at the University of Illinois at Chicago have devised a very simple and inexpensive way of producing high-quality, defect-free sheets of graphene on a range of substrates (materials). Other methods at producing large quantities of defect-free graphene have so far been very elusive -- and, for the purposes that we're interested in (replacing silicon in microelectronics), anything less than defect-free just won't do.