报告时间：2024年06月14日（星期五）10:30-12:00
报告地点：材料楼601会议室
报 告 人：项荣 教授
工作单位：浙江大学
举办单位：材料科学与工程学院
报告简介：
We present the experimental synthesis of one-dimensional (1D) van der Waals heterostructures, a class of materials where different atomic layers are coaxially stacked. A typical structure is a 5-nanometer–diameter heteronanotube consisting of an inner SWCNT, a middle three-layer BN nanotube (BNNT), and an outer MoS2 nanotube (MoS2NT). Electron diffraction verifies that all shells in this structure are single crystals. This work suggests that all the materials in the current 2D library could be rolled into their 1D counterparts and a plethora of function-designable 1D heterostructures may be realized. We also present our follow-up study on the structural details and formation mechanism of 1D heterostructures. Edge structures, nucleation sites, crystal epitaxial relationships are clearly revealed using a nondestructive transmission electron microscopy. Later, we summarize the current understanding on the properties of 1D heterostructures. Lastly, we will present our recent progress and perspective on more sophisticated 1D heterostructures.
报告人简介：
项荣，浙江大学长聘正教授、求是特聘教授，国家级人才。本科毕业于中国科学技术大学，硕士毕业于清华大学，博士毕业于日本东京大学。曾在日本东京大学任职，历任博士后、助理教授、长聘副教授。主要从事原子级材料制造与表征研究。发表SCI论文150余篇，刊登于Science，Science Adv，Nature Review, PNAS, JACS, ACS Nano, Adv Mater等期刊。国际首创了一维范德华异质结，工作被Science、Nature Electronics等多家媒体报道。承担日本学术振兴机构JSPS、日本技术振兴机构JST，中国科技部、基金委、教育部等各级课题30余项。获日本文部科学大臣表彰等奖励等各级奖励10余项。