|Posted: Oct 29, 2015|
Scientists predict behaviour of charge currents in graphene(Nanowerk News) Until now scientists believed that in two-dimensional materials electrons always “localised” - in other words suddenly stopped as they scatter from impurities in the crystal structure.
|Now research, led by Dr Aires Ferreira from the University’s Department of Physics, has shown that in a certain type of graphene “electron localisation” can be overcome ("Critical Delocalization of Chiral Zero Energy Modes in Graphene").|
|Graphene is a single layer of carbon atoms arranged in a honeycomb-shaped lattice and is extremely strong. It is considered a super material and scientists worldwide are researching whether it could be used in advanced circuitry and other electronic devices.|
|Dr Ferreira said the new method, which is able to assess the impact of billions of atoms for the first time, could help pave the way for faster, more efficient devices.|
|He said: “It is a game changer and has implications beyond physics. This new method could be beneficial in designing new materials, tailoring them for applications in ‘greener’ computing devices".|
|“Since it can be applied to study the electrical response of real-size crystal structures, it can help scientists tailor materials for faster and more efficient processing of information in the future.”|
|“Although we don’t know what materials will be used in next-generation devices we now have a method capable of simulating what will happen to electric signals in complex materials.”|
|He added: “If we can predict how currents propagate we can build better circuitry and faster processors; it could revolutionise computers.”|
|Source: University of York|
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