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Successful design and control of ceramics dislocation core atomic

Successful design and control of ceramics dislocation core atomic

Experimental reproduction from supercomputer predictions
-Joint Research by Tohoku University, University of Tokyo, and University of York-

Summary

A research group led by Professor Yuichi Ikuhara (Joint Appointment as Professor at the University of Tokyo, Principal Investigator at the Japan Fine Ceramics Center Nanostructures Research Laboratory, and Professor at the Kyoto University Elements Strategy Initiative for Structural Materials) and Associate Professor Zhongchang Wang of the Advanced Institute for Materials Research at Tohoku University succeeded for the first time in the world in artificially creating new dislocation core structures, distinct at the atomic level, by designing and controlling the dislocation array of crystals located inside ceramics (magnesium oxide), utilizing an ultra-high resolution scanning transmission electron microscope and supercomputer calculations. In other words, the experiment succeeded in recreating the exact same atomic structure inside a crystal from dislocation structures simulated in advance by a supercomputer.

Article Information

Zhongchang Wang, Mitsuhiro Saito, Keith P. McKenna, and Yuichi Ikuhara , "Polymorphism of Dislocation Core Structures at the Atomic Scale" Nature Communications(2014) Abstract

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