Graphene

At this day in age, pencils are so commonly found that society doesnt second guess this offer of technology. Every time a pencil is used, the phenomenon behind it is plain 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 ingredients.1,2,3 Graphene possesses many an(prenominal) a(prenominal) qualities that are favorable in electronics. Could these ascorbic acid sheets hold chance upon in our society? Graphene is made up entirely of carbon atoms bound together in a network of specialize hexagons. In a single(a)(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 out front our eyes, but no one ever time-tested to look, says Andre Geim, a physicist at the University of Ma nchester in England.3 However mundane the choke up may be, physicists have long predicted that if it were possible to seclude single graphene sheets, they would be sturdier than diamond and would have almost preternatural abilities to die 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, sanction alone do anything useful with them. In 2004, Geim and his collaborators startled the material 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, resear chers started with bits of debri left over a! fter 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 emplacement 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 deficiency to get a full essay, order it on our website: OrderEssay.net

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