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Graphene has excellent optical, electrical and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine and drug delivery. It is considered as a revolutionary material in the future.
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Physicists Andre gehm and konstantin novoselov of the university of Manchester, United Kingdom, have won the 2010 Nobel Prize in physics for their work in separating graphene from graphite by micromechanical stripping.
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Mechanical stripping, REDOX, SiC epitaxy and chemical vapor deposition (CVD) are the common methods for powder production of graphene. On March 31, 2018, China's first automatic production line for production of graphene organic solar optoelectronic devices in shandong heze starts, the project mainly produces power under the weak light of graphene organic solar cells (hereinafter referred to as graphene OPV), cracked the application limitation, sensitive to Angle, is not easy to modelling the three solar power problem.
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In fact, graphene already exists in nature, but it is difficult to peel off a single layer structure. Graphene is made by stacking graphene on top of each other. Graphite 1 millimeter thick contains about 3 million layers of graphene. When a pencil lightly cuts across a piece of paper, it can leave a trail of several or even just one layer of graphene.In 2004, two scientists at the university of Manchester, Andre Geim and Konstantin Novoselov, found that they could get thinner and thinner sheets of graphite in a very simple way.
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They strip the graphite sheet out of highly oriented pyrolytic graphite and then attach both sides of the sheet to a special type of tape. And you do that over and over again, and the sheet gets thinner and thinner, and eventually they get a sheet that's just one layer of carbon atoms, and that's graphene.
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Since then, new methods to prepare graphene have emerged one after another. In 2009, Andre gehm and konstantin novoselov respectively discovered the integer quantum hall effect and the quantum hall effect at room temperature in single-layer and double-layer graphene systems, for which they won the 2010 Nobel Prize in physics.
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Before graphene was discovered, most physicists believed that thermodynamic fluctuations did not allow any two-dimensional crystal to exist at finite temperatures. So its discovery immediately shocked the physics community of condensates. Although both theoretical and experimental circles believe that a perfect two-dimensional structure cannot be stable at non-absolute zero, single-layer graphene can be prepared in experiments.
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On March 31, 2018, China's first automatic production line for production of graphene organic solar optoelectronic devices in shandong heze starts, the project mainly produces power under the weak light of graphene organic solar cells (hereinafter referred to as graphene OPV), cracked the application limitation, sensitive to Angle, is not easy to modelling the three solar power problem.
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On June 27, 2018, China graphene industry technology innovation strategic alliance issued the newly formulated group standard "product naming guide for graphene materials". This standard specifies the naming of new products related to graphene materials.
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