It has almost been 20 years since the establishment of the field of two-dimensional (2D) materials with the discovery of unique properties of graphene, a single, atomically thin layer of graphite. The significance of graphene and its one-of-a-kind properties was recognized as early as 2010 when the Nobel prize in physics was awarded to A. Geim and K. Novoselov for their work on graphene. However, graphene has been around for a while, though researchers simply did not realize what it was, or how special it is (often, it was considered annoying dirt on nice, clean surfaces of metals REF). Some scientists even dismissed the idea that 2D materials could exist in our three-dimensional world.
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Source: Phys.org