Graphene spray guns are a kinetic spray system that deposits, through supersonic acceleration, a one atom thick sheet of pure carbon named graphene by means of a de Laval nozzle,[1] which is a pinched tube with an hourglass type shape. The system deposits graphene flakes and a hexagonal graphene lattice is created upon impact of the desired surface. The graphene spray gun would be utilized onto large-scale applications such as circuits, radio transmitters, and optical electronics due to its transparency and its high electrical conductivity.[2] The supersonic spray system was first developed in May 2014 by University of Illinois professor Alexander Yarin, and Korea University professor Sam Yoon. Yarin went to Yoon when he learned about his work regarding kinetic spray deposition systems. Yarin believed that graphene could be applied to the system in order to create a layer of the material. After conducting experiments with the newly created system, they concluded that the graphene spray system was a success.[1] The spray gun is still in its early stages of development, but is considered by many scientists and researchers to be the solution of various predicaments that occur when applying graphene onto large-scale products. The most common problem that would transpire within the other methods is that the layer would be uneven and coated by aggregations. The energy delivered by the supersonic spraying stretches the graphene evenly upon impact, and is the main reason for the spray system’s lack of defects that are common within other graphene deposition methods.[3][4]
^ abGalatzer-Levy, Jeanne. "Supersonic spray delivers high-quality graphene layer". uic.edu/uic/. The Board of Trustees of the University of Illinois. Retrieved 30 October 2014.
^de La Fuente, Jesus. "Graphene Applications". Graphenea. Retrieved 9 November 2014.
^Kim, Do-Yeon (2014). "Self-Healing Reduced Graphene Oxide Films by Supersonic Kinetic Spraying". Advanced Functional Materials. 24 (31). John Wiley & Sons, Inc.: 4986–4995. doi:10.1002/adfm.201400732.
^Solon, Olivia. "Supersonic spray gun produces 'flawless' layer of graphene". Wired. Condé Nast UK. Retrieved 29 October 2014.
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