中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/49923
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 67621/67621 (100%)
造访人次 : 23044716      在线人数 : 245
RC Version 7.0 © 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


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/49923


    题名: Anomalous Contact Angle Hysteresis of a Captive Bubble: Advancing Contact Line Pinning
    作者: Hong,SJ;Chang,FM;Chou,TH;Chan,SH;Sheng,YJ;Tsao,HK
    贡献者: 化學工程與材料工程學系
    关键词: SURFACES
    日期: 2011
    上传时间: 2012-03-27 16:26:34 (UTC+8)
    出版者: 國立中央大學
    摘要: Contact angle hysteresis of a sessile drop on a substrate consists of continuous invasion of liquid phase with the advancing angle (theta(a)) and contact line pinning of liquid phase retreat until the receding angle (theta(r)) is reached. Receding pinning is generally attributed to localized defects that are more wettable than the rest of the surface. However, the defect model cannot explain advancing pinning of liquid phase invasion driven by a deflating bubble and continuous retreat of liquid phase driven by the inflating bubble. A simple thermodynamic model based on adhesion hysteresis is proposed to explain anomalous contact angle hysteresis of a captive bubble quantitatively. The adhesion model involves two solid-liquid interfacial tensions (gamma(sl) > gamma(sl)'). Young's equation with gamma(sl) gives the advancing angle theta(a) while that with gamma(sl)' due to surface rearrangement yields the receding angle theta(r). Our analytical analysis indicates that contact line pinning represents frustration in surface free energy, and the equilibrium shape corresponds to a nondifferential minimum instead of a local minimum. On the basis of our thermodynamic model, Surface Evolver simulations are performed to reproduce both advancing and receding behavior associated with a captive bubble on the acrylic glass.
    關聯: LANGMUIR
    显示于类别:[化學工程與材料工程學系 ] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML458检视/开启


    在NCUIR中所有的数据项都受到原著作权保护.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈  - 隱私權政策聲明