SEMINAR
The State Key Lab of
High Performance Ceramics and Superfine Microstructure
Shanghai Institute of Ceramics, Chinese Academy of Sciences
中国科学院 上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室

2010年度国家重点实验室特邀学术报告

异质与复杂一维纳米结构及其原型器件的可控构筑

Speaker

孟国文研究员

中科院固体物理研究所

时间：2010 年 10 月 8 日（星期五）上午 9:30
地点： 2号楼607会议室
欢迎广大科研人员和研究生参与讨论！

异质与复杂一维纳米结构及其原型器件的可控构筑  摘要

The design and controlled synthesis of hierarchically branched- and hetero-nanostructures consisting of nanotube (NT) and nanowire (NW) will impact developments in nanotechnology. The present synthetic approaches however limit the degree of complexity and controllability, therefore it has been a challenge to develop generic approaches for precisely controlled fabrication of branched- and hetero-nanostructures.

For branched one-dimensional (1D) nanostructures, we will demonstrate a generic synthetic approach, based on the rational design of hierarchically branched nanochannels inside anodic aluminum oxide (AAO) templates, to design and builda broad set of multiply branched NTs and NWs. These include multiple generations of Y-branches, multiple branches from one stem, Y-branches with sub-multi-branches, multi-branches with sub-Y-branches, and multi-branches with sub-multi-branches. The total number and frequency of branching, and the dimensions of the nanostructures are controlled through pore design and assembly.

For branched hetero-nanostructures, we will show a generic synthetic approach to various branched two-segment NW/NT and three-segment NT/NW/NT heterojunctions with excellent control over the hierarchy, composition and placement, via a combinatorial process of electrodepositing NWs within the branched-channels of AAO templates, selectively etching part of the electrodeposited NWs, and growing NTs on the ends of the NWs. The NW segment can be not only mono-segment but also several sub-segments of different materials of metals, alloys and compound semiconductors; while the NT segment can be made from carbon, silicon and silica; and the two end NT segments in NT/NW/NT architectures can comprise not only the same but also different materials.

孟国文研究员个人简介

孟国文：中科院固体物理研究所副所长，“纳米研究”重大科学研究计划首席科学家（项目2007CB936600，2007～2011）。

孟国文分别于1984年和1987年获西北工业大学材料系学士和硕士学位；硕士毕业后留校工作，95年12月晋升副教授。96年9月西工大在职博士毕业后到中科院固体物理所做博士后，98年10月出站后留固体所工作；99年1月晋升研究员。2002.10～2004.11期间，在美国Rensselaer理工学院纳米技术中心做博士后。获2005年度国家杰出青年基金资助。主要从事一维纳米材料及相关原型器件、纳米材料与环境介质的相互作用等研究。与他人合作，在SCI刊物发表论文130余篇。论文被SCI刊物引用4300余次；论文被引用的H因子为35。参加的“无机纳米线和纳米线阵列”获2002年度安徽省自然科学类一等奖（第2完成人）；参加的“一维纳米线及其有序阵列的制备研究”获2006年度国家自然科学二等奖(第2完成人)；获第七届(2006年度)“安徽青年科技奖”。