English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 59063/92570 (64%)
造访人次 : 732947      在线人数 : 45
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: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/77255

    题名: High-Temperature Annealing Effects on Multiwalled Carbon Nanotubes: Electronic Structure, Field Emission and Magnetic Behaviors
    作者: Ray, Sekhar Chandra;Pao, Chih-Wen;Tsai, Huang-Ming;Chen, Huang-Chin;Chen, Yu-Shin;Wu, Shang-Lun;Ling, Dah-Chin;Lin, I-Nan;Pong, Way-Faung;Gupta, Sanju;Giorcelli, Mauro;Bianco, Stefano;Musso, Simone;Tagliaferro, Alberto
    贡献者: 淡江大學物理學系
    关键词: MWCNTs;Thermal annealing;Electronic Structure;Electron field Emission;Magnetization
    日期: 2009-12
    上传时间: 2012-06-14 09:24:36 (UTC+8)
    出版者: Valencia: American Scientific Publishers
    摘要: This work elucidates the effects of high-temperature annealing on the microscopic and electronic structure of multiwalled carbon nanotubes (MWCNTs) using high-resolution transmission electron microscopy, micro-Raman spectroscopy, X-ray diffraction, X-ray absorption near-edge structure (XANES) and valence-band photoemission spectroscopy (VBPES), respectively. The field emission and magnetization behaviors are also presented. The results of annealing are as follows: (1) MWCNTs tend to align in the form of small fringes along their length, promote graphitization and be stable in air, (2) XANES indicates an enhancement in oxygen content on the sample, implying that it can be adopted for sensing and storing oxygen gas, (3) the electron field emission current density (J) is enhanced and the turn-on electric field (ETOE) reduced, suggesting potential use in field emission displays and as electron sources in microwave tube amplifiers and (4) as-grown MWCNTs with embedded iron nanoparticles exhibits significantly higher coercivity ∼750 Oe than its bulk counterpart (Febulk ≈ 0.9 Oe), suggesting its potential use as low-dimensional high-density magnetic recording media.
    關聯: Journal of Nanoscience and Nanotechnology 9(12), pp.6799-6805
    DOI: 10.1166/jnn.2009.1581
    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
    1533-4899_9(12)p6799-6805.pdf8934KbAdobe PDF352检视/开启



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