文化大學機構典藏 CCUR:Item 987654321/35889
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 47184/51050 (92%)
造访人次 : 13937398      在线人数 : 449
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU 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
    主页 ‧ 登入 ‧ 上传 ‧ 说明 ‧ 关于CCUR ‧ 管理 到手机版


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/35889


    题名: Size-Dependent Thermal Behaviors of 5-Fold Twinned Silver Nanowires: A Computational Study
    作者: Chen, HL (Chen, Hui-Lung)
    Ju, SP (Ju, Shin-Pon)
    Wang, SL (Wang, Shi-Liang)
    Pan, CT (Pan, Cheng-Tang)
    Huang, CW (Huang, Chen-Wen)
    贡献者: 化學系
    关键词: MOLECULAR-DYNAMICS
    NANOPARTICLES
    DEFORMATION
    SIMULATION
    SURFACE
    GOLD
    日期: 2016-06
    上传时间: 2017-04-13 11:17:12 (UTC+8)
    摘要: The melting behaviors of silver nanowires (AgNWs) were investigated by molecular dynamics (MD) simulations using the 2nn-modified embedded-atom method potential (2nn-MEAM) during a temperature elevation process from 0 to 1500 K. Four AgNWs with diameters of 1.6, 2.4, 4.8, and 10 nm were considered, and these nanowire structures with 5-fold twinned boundaries were constructed according to the experimental observations. The melting point of bulk Ag predicted by the two-phase method is about 1280 K, which is very close to the experimental result of 1234 K, indicating the 2nn-MEAM potential can accurately reflect the thermal behavior of Ag material. For AgNWs, the melting points will significantly decrease from 1250 to 790 K as the AgNW diameters decrease from 10 to 1.6 nm. According to the variations of surface atom square displacement (SD) profiles at different temperatures, it is found that the premelting behaviors could be efficiently investigated for all S-fold twinned AgNWs before their melting temperatures. In addition, this phenomenon is very different from those of Ag single-crystal nanoparticles with diameters smaller than 8 nm, which melt at their melting temperatures without passing a surface premelting stage. The difference in thermal behaviors between the AgNWs and Ag single-crystal nanoparticles can be attributed to the twinned boundaries (TBs) within AgNWs.
    關聯: JOURNAL OF PHYSICAL CHEMISTRY C 卷: 120 期: 23 頁碼: 12840-12849
    显示于类别:[化學系所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML254检视/开启


    检视Licence

    在CCUR中所有的数据项都受到原著作权保护.

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