(a) Turbostratic (soot) particles (diameter 67 nm). (b) Onion-like particles (diameter 17 nm). (c) Amorphous particles (diameter 26 nm). (d) Trace amorphous particles (diameter 17 nm). The four ...

Image Credit: koya979/Shutterstock.com . Since it was discovered and isolated back in 2004, the single atomic layer of carbon known as graphene has been intensively investigated, with scientists ...