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New research gives insight into graphene grain boundaries
Date:1/15/2013

ectron impinges on the electron's movement at the grain boundary, leading to variations in their scattering.

"More scattering means that it is making it more difficult for an electron to move from one grain to the next," he said. "The more difficult you make that, the lower the quality of the electronic performance of any device made from that graphene."

The researchers work is aimed not just at understanding, but also at controlling grain boundaries. One of their findings that GBs are aperiodic replicated other work and could have implications for controlling them, as they wrote in the paper: "Combining the spectroscopic and scattering results suggest that GBs that are more periodic and well-ordered lead to reduced scattering from the GBs."

"I think if you have to live with grain boundaries you would like to be able to control exactly what their orientation is and choose an angle that minimizes the scattering," Lyding said.


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Contact: Steve McGaughey
smcgaugh@illinois.edu
217-244-5582
Beckman Institute for Advanced Science and Technology
Source:Eurekalert  

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