公海555000kk线路检测・(中国)有限公司

摘要

In this talk, I will introduce one of my research areas in the field of soft matter physics: topological defects in condensed matters. Topological defects originate from the broken continuous symmetry in phase transition, and they are mathematical singularities in the resulting ordered phases. Examples include dislocations and disclinations in crystals. Topological defects are fascinating objects permeating in fields as diverse as materials science, granular physics, biology and seismology. For example, the proliferation of dislocations has a strong connection with the plastic deformation and failure of materials, as well as the occurrence of earthquakes. In the field of soft matter physics, topological defects are crucial for understanding the open question of how various ordered structures are spontaneously formed. Much has been learned about the nature of topological defects by studying two-dimensional curved crystals; the curvature of the substrate will frustrate the otherwise perfect crystalline order. In this talk, I will introduce the concept of topological defects, and present our systematic researches on topological defects in both curved and planar two-dimensional crystals. 

报告人简介

姚振威，2004年本科毕业于西安交通大学物理系，2012年于美国雪城大学获物理博士学位。2012-2015年在美国西北大学任博士后研究员，从事软物质物理学研究。

一直致力于软物质中的缺陷结构，弹性与几何的相互作用等前沿科学问题，对于软凝聚态研究的各种解析和计算机模拟等研究工具具有丰富的经验。近3年来，在 Proceeding of National Academy of Science, Physical Review Letters国际学术期刊发表文章15篇，尤其在拓扑缺陷和多分散物质微观结构的联系方面做出了突出的贡献。