* Graphene: A single sheet of graphene is only one atom thick. This is measured in nanometers (nm), with a thickness of about 0.34 nanometers. To put that into perspective, a human hair is about 80,000 nanometers thick!
* Other Carbon Sheets: While graphene is the most well-known, there are other nanotechnology developed carbon sheets, like carbon nanotubes and fullerenes. These have varying thicknesses, but are generally measured in nanometers and are all extremely thin.
So, in summary: A single sheet of a nanotechnology developed carbon sheet is incredibly thin, typically only a few atoms thick. This makes them incredibly strong and flexible materials with a wide range of potential applications.
