報告時間：2024年06月14日（星期五）10:30-12:00
報告地點：材料樓601會議室
報 告 人：項榮 教授
工作單位：浙江大學(xué)
舉辦單位：材料科學(xué)與工程學(xué)院
報告簡介：
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.
報告人簡介：
項榮，浙江大學(xué)長聘正教授、求是特聘教授，國家級人才。本科畢業(yè)于中國科學(xué)技術(shù)大學(xué)，碩士畢業(yè)于清華大學(xué)，博士畢業(yè)于日本東京大學(xué)。曾在日本東京大學(xué)任職，歷任博士后、助理教授、長聘副教授。主要從事原子級材料制造與表征研究。發(fā)表SCI論文150余篇，刊登于Science，Science Adv，Nature Review, PNAS, JACS, ACS Nano, Adv Mater等期刊。國際首創(chuàng)了一維范德華異質(zhì)結(jié)，工作被Science、Nature Electronics等多家媒體報道。承擔日本學(xué)術(shù)振興機構(gòu)JSPS、日本技術(shù)振興機構(gòu)JST，中國科技部、基金委、教育部等各級課題30余項。獲日本文部科學(xué)大臣表彰等獎勵等各級獎勵10余項。
