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Graphene

机译：石墨烯

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1 It's touted as a miracle material, promising everything from space travel to better hair, but there isn't much to graphene - literally. It's a single layer of carbon atoms arranged in a repeating honeycomb-shaped pattern. 2 Graphene has great flexibility and strength, and because it's essentially two-dimensional, electricity flows across it so quickly that it's one of the most conductive materials known. 3 You'd be forgiven for not knowing much about it, however. Graphene had long been theorized, but it was only in 2004 that physicists Kostya Novoselov and Andre Geim proved graphene could exist on its own without being chemically bonded to other elements. 4 Just six years later, Novoselov and Geim won the Nobel Prize in Physics for their work. Also in that short span, researchers around the world published more than 5,000 papers on the material. 5 No doubt you've written a paper or two with graphene. Many, many layers of the material, when stacked, form graphite, the key component of your typical pencil lead. 6 How many layers? It depends on the thickness of the pencil lead, but it takes 3 million graphene layers to make a graphite crystal that's just 1 millimeter thick.
机译：1它被吹捧为一种奇迹材料，它承诺从太空旅行到更好的头发，应有尽有，但石墨烯的意义并不大。它是单层碳原子，以重复的蜂窝状图案排列。 2石墨烯具有出色的柔韧性和强度，并且由于其本质上是二维的，因此电流流过石墨烯的速度如此之快，以至于它是已知的最具导电性的材料之一。 3但是，您对此了解不多，这是可以原谅的。石墨烯早已被理论化，但是直到2004年，物理学家Kostya Novoselov和Andre Geim才证明石墨烯可以独立存在而不会化学键合到其他元素上。 4仅仅六年后，诺沃塞洛夫和吉姆因其工作而获得了诺贝尔物理学奖。同样在短时间内，世界各地的研究人员就该材料发表了5,000多篇论文。 5毫无疑问，您已经用石墨烯写了一两篇论文。多层材料堆叠在一起时会形成石墨，这是典型铅笔芯的关键组成部分。 6几层？这取决于铅笔芯的厚度，但是要形成仅1毫米厚的石墨晶体，需要300万个石墨烯层。

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    《Discover》 |2018年第7期|74-74|共1页
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    GEMMA TARLACH;

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