Who discovered graphene?
History of graphene
The earliest TEM images of few-layer graphite were published by G. Ruess and F. Vogt in 1948.[16] Later, single graphene layers were observed directly by electron microscopy.[17] Before 2004 intercalated graphite compounds were studied under a transmission electron microscope (TEM). Researchers occasionally observed thin graphitic flakes ("few-layer graphene") and possibly even individual layers. An early, detailed study on few-layer graphite dates to 1962 when Boehm reported producing monolayer flakes of reduced graphene oxide.[18][19][20][21]