| 胶体自组装过程中的形核与绕流影响 |
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| 引用本文： | 郑怀文,蓝鼎,王育人. 胶体自组装过程中的形核与绕流影响[J]. 力学与实践, 2011, 33(2): 8-11. DOI: 10.6052/1000-0879-lxysj2010-227 |
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| 作者姓名： | 郑怀文 蓝鼎 王育人 |
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| 作者单位： | 1. 中国科学院力学研究所国家微重力实验室，北京 100190;2. ; |
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| 基金项目： | 国家重点基础研究发展计划项目(973计划)(2011CB710901); 国家自然科学基金(10832011); 中国科学院知识创新工程(KJCX2-YW-L08)资助项目 |
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| 摘 要： | 应用长工作距显微镜对胶体粒子自组装过程中初形核阶段进行了原位观察实验研究, 并结合三相接触线附近流场的数值模拟结果对绕流的影响进行了研究. 研究表明流线在短链附近发生弯曲. 当颗粒靠近短链附近时, 水平流将颗粒推向短链的端部. 绕流将抑制形核过程中局部的过快生长, 从而保持生长前沿平直.
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| 关 键 词： | 胶体晶体；绕流；自组装 |
| 收稿时间： | 2010-05-31 |
THE FLOW AROUND NUCLEATION SITES IN COLLOIDAL ASSEMBLING PROCESS |
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| ZHENG Huaiwen , LAN Ding , WANG Yuren. THE FLOW AROUND NUCLEATION SITES IN COLLOIDAL ASSEMBLING PROCESS[J]. Mechanics and Engineering, 2011, 33(2): 8-11. DOI: 10.6052/1000-0879-lxysj2010-227 |
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| Authors: | ZHENG Huaiwen LAN Ding WANG Yuren |
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| Affiliation: | ZHENG Huaiwen LAN Ding WANG Yuren~2 (Key Laboratory of Microgravity Science,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | An in-situ observation of the initial nucleation of the colloidal crystal was performed by utilizing a long working distance microscope.The streamlines in the vicinity of the three-phase contact line are calculated by the fluid dynamics software Fluent.The trajectory of the particle indicates that the streamline is bent around short chains.When the particle goes close to a short chain,a horizontal flow pushes the particle to the end of the short chain(flowing-around,FA).The simulation indicates that the par... |
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| Keywords: | colloidal crystal flow-around self-assembling |
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