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Broschüre EMFL English

8 high magnetic fields allow scientists to: explore the properties of new materials Soon after Andre Geim and Konstantin Novoselov first created graphene – a carbon sheet one atom in thickness – in Manchester, they rushed across the Channel to investigate the properties of this extraordinary material in a high magnetic field. At the Nijmegen EMFL magnet lab, they soon discovered graphene’s remarkable electronic and conductive properties, a feat which ultimately led to their winning the 2010 Nobel Prize in Physics. The first commercial- ly available technological applications of graphene – such as mobile phones with flexible screens – are now only a matter of time. manipulate matter Synthetic or organic materials are frequently made up of long, entangled molecules. Their structure resembles a plate of cooked spaghetti. When these molecules are exposed to a magnetic field, they can be aligned in one direction – like boxed dry spaghetti. This can change an opaque into a transparent material or improve the electrical conductivity of organic materials. Because like the spa- ghetti, the molecules will all be pointing in the same direction, and they’ll transport energy much more efficiently. Using this technique, coronene molecules were used to create an organic transistor. What does tesla mean anyway? The tesla (abbreviated T) is the international standard unit of the magnetic field or, more precise, of the magnetic flux density. A traditional horseshoe magnet is one tenth of a tesla. Earth’s magnetic field is consid- erably smaller (thirty thousand times smaller than a tesla). The EMFL magnets range from 35 teslas for a continuous field to 94 teslas for a non-destructive pulsed field all the way up to 180 teslas for semi-destructive fields.

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