English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 60868/93650 (65%)
造访人次 : 1147126      在线人数 : 26
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/27697

    题名: Dependence of workfunction on the geometries of single-walled carbon nanotubes
    作者: Chen, Chun-wei;Lee, Ming-hsien
    贡献者: 淡江大學物理學系
    关键词: electrical;magnetic and optical Surfaces;interfaces and thin films;Nanoscale science and low-D systems
    日期: 2004-05
    上传时间: 2009-12-31 10:38:16 (UTC+8)
    出版者: Institute of Physics (IOP)
    摘要: The effective workfunctions of single-walled carbon nanotubes of armchair (5,5) and zigzag (9,0) with various geometries have been calculated by first-principles calculations. The results show that the capped and H-terminated zigzag (9,0) carbon nanotubes exhibit a lower workfunction value than the armchair (5,5) nanotubes with a similar diameter. The open-ended (without H termination) (5,5) nanotube, on the other hand, shows a lower workfunction than the open-ended (9,0) structure. The former exhibits a significant formation of triple bonds at its mouth part after relaxation, which reduces the surface dipole and lowers its workfunction, the latter exhibits a higher density of unsaturated dangling bonds, raising its surface dipole and giving a higher value of workfunction.
    關聯: Nanotechnology 15(5), pp.480-484
    DOI: 10.1088/0957-4484/15/5/013
    显示于类别:[物理學系暨研究所] 期刊論文


    档案 描述 大小格式浏览次数
    Dependence of workfunction on the geometries of single-walled carbon nanotubes.pdf434KbAdobe PDF1检视/开启



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈