报告题目：
Chirality Controlled Growth of Singled-walled Carbon Nanotubes Array
报告人：张锦教授/博士生导师, 北京大学
时 间：2018年1月16日（星期二）上午8:30
地 点：材料馆A323
报告摘要：
Direct growth single-walled carbon nanotubes(SWNTs) with controlled structures still remains many challenges. In this talk,we will focus on the controlled growth of SWNTs arrays with ultra-high density,high ratio semiconducting properties and special chiral angles. For the SWNTs arrays with ultra-high density, Trojan catalysts (released from substrate) was developed and the density can be as high as 150 tubes/µm. For the SWNTs arrays with semiconducting properties, oxides catalysts with oxygen vacancy, bimetal catalysts and uniform Mo2C catalyst were used to grow semiconducting SWNTs arrays and ratio of semiconducting tubes can be higher than 95%. For the SWNTs arrays with special chiral angles, it is based on a consideration of nanotube/catalyst interfacial thermodynamics determined by symmetry, and thekinetic growth rates set by the number of kinks. Using these strategies, horizontally aligned metallic ((12, 6), abundance >90%) and semiconducting((8, 4), abundance >80%) SWNT arrays with an average density higher than 20 tubes/µm and 10 tubes/µm, respectively, were successfully obtained on uniform solid catalysts.
个人简介：
张锦，男，北京大学教授、博士生导师，国家杰出青年基金获得者、教育部长江学者特聘教授、英国皇家化学学会会士、中组部万人计划科技创新领军人才入选者、科技部重点研发计划项目首席科学家。1997年12月获兰州大学和北京大学联合培养理学博士学位。1998－2000年在英国利兹大学从事博士后研究。主要从事纳米碳材料的控制制备及其拉曼光谱学研究，在Nature 和Nat. Mater.等刊物发表论文230余篇，获授权专利20余项。荣获国家自然科学奖二等奖、全国优秀博士学位论文指导教师、中国化学会青年化学奖、教育部“新世纪优秀人才资助计划”等和北京大学“十佳”导师等奖励。现任北京大学化学院副院长、北京石墨烯研究院副院长和北京大学纳米化学研究中心副主任。兼任中国化学会理事、《Nano Res.》、《化学学报》、《物理化学学报》和《光散射学报》的编委。
欢迎感兴趣的老师和同学们参加！
