Researchers at the University of California, Irvine and other international institutions have for the first time achieved atomic-scale observations of grain rotation in polycrystalline materials. … Scientists have speculated and theorized…for decades…We have been able to transition from theory to observation," said senior author Xiaoqing Pan, UC Irvine Distinguished Professor of materials science and engineering and UC IMRI director. … "Our results provide…evidence of the mechanism by which grains rotate in polycrystals on an atomic scale," said Pan, who is also a professor in UC Irvine's Department of Physics & Astronomy, a Henry Samueli Endowed Chair in Engineering, and director of the UC Irvine Center for Complex and Active Materials. Read More