Graphene

At this day in age, pencils are so ordinarily found that society doesnt second guess this function of technology. Every time a pencil is used, the phenomenon behind it is patently taken for granted. The lead of a pencil could never be converted into more advanced technology like in electronics, right? Graphene comes from plumbago, the lead in a pencil: a kind of pure coke formed from flat, stacked forges of pinchs.1,2,3 Graphene possesses many another(prenominal) a(prenominal) qualities that are favorable in electronics. Could these atomic number 6 sheets hold key in our society? Graphene is made up entirely of carbon atoms bound together in a network of carve up hexagons. In a individual(a) plane just unrivaled atom thick, the large assembly of benzene rings resembles volaille wire, as seen in Figure 1 at left.1 Graphene has evermore been sooner our eyes, but no one ever time-tested to look, says Andre Geim, a physicist at the University of Man chester in England.3 However mundane the choke up may be, physicists have long predicted that if it were possible to isolate single graphene sheets, they would be sturdier than diamond and would have almost preternatural abilities to flow electrons.3 That could make graphene a better material than silicon for do computer chips.

2,3 Until recently, though, no one had been able to isolate graphene sheets, yield alone do anything useful with them. In 2004, Geim and his collaborators startled the somatogenetic science community by announcing they had had peeled graphene layers off plumbago exploitation common adhesive tape.1,3 In order to isolate this layer of graphene, resea rchers started with bits of debri left over ! after splitting plumbago by brute force(like rubbing a pencil crossways a piece of paper). 1,2 A poker chip of graphite debris was accordingly stuck onto plastic adhesive tape, folded the sticky spatial relation of the top of the flake and then pulled the tape apart, cleaving the flake in two. As the experimenters repeated the process, the resulting fragments grew thinner.1,2,3 The discovery raised a buzz...If you trust to get a full essay, order it on our website: OrderEssay.net

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