中国科学技术大学侯建国、王兵教授研究组近日利用扫描隧道显微术(STM)研究石墨烯有序晶界,揭示了原子尺度分辨的有序晶界结构,证明了有序晶界中存在范霍夫奇异性(VHS)。相关研究成果发表在《Physical Review Letters》上。晶界是石墨烯材料中的一种结构缺陷,通常是生长过程中各晶粒间取向差异所致,常见于通过化学气相沉积(CVD)生长的较大面积石墨烯。与其他晶体材料相似,石墨烯中晶 Researcher Hou Jianguo and Wang Bing of the University of Science and Technology of China recently studied the graphene ordered grain boundaries by scanning tunneling microscopy (STM), revealing the ordered grain boundary structures with atomic scale resolution, Hough singularity (VHS). Relevant research results published in “Physical Review Letters”. Grain boundaries, a structural defect in graphene materials, are usually caused by differences in orientation between grains during growth, commonly found in larger-area graphenes grown by chemical vapor deposition (CVD). Similar to other crystalline materials, graphene is crystallized