2017年12月6日(周三)10:00-10:40,旗山校区理工楼3#303,徐力方研究员,学术讲座【Graphene Chain on Diamond (111) Driven by B-doping Induced Surface Reconstruction】

时间:2017-12-04浏览:1110

学术讲座【Graphene Chain on Diamond (111) Driven by B-doping Induced Surface Reconstruction】

时间:2017年12月6日(周三)10:00-10:40

地点:理工3号楼303会议室

主讲:徐力方,中国科学院物理所量子模拟中心,研究员、主任工程师

主办:物理与能源学院、福建省量子调控与新能源材料重点实验室、福建省太阳能转换与储能工程技术研究中心

专家简介:

徐力方,1984年于中国科技大学近代物理系理论物理专业获学士学位, 师从于渌教授。1989年于意大利 International School for Advanced Studies (SISSA)获硕士和博士学位,师从E. Tosatti, M. Parrinello, A. Selloni., 以后在中国科学院理论物理所和瑞典UMEA大学理论物理系从事博士后研究。2005年至今任中国科学院物理所量子模拟中心研究员、主任工程师。主要从事量子物理解析解,计算物理,计算机管理等多方面的工作。


报告摘要:

Spontaneous construction of one-dimensional (1-D) graphene chain on boron-doped diamond (111) surface has been found in first principles calculations. Boron-doping-induced surface reconstruction is the mechanism responsible for such a graphene chain formed on diamond (111). Comparing with graphene nanoribbon, there are three advantages in chain structure: this is the narrowest and a true 1-D graphene with only one six-member ring structure; there is no dangling bond on its edges since they are connected to surface carbon atoms; diamond surface naturally provides the substrate for graphene chain. Furthermore, band structure calculation shows that graphene chain keeps linear energy dispersion relation along the chain direction.