Constrained Brownian Motion of a Single Ellipsoid in a Narrow Channel | |
Li HH(李瀚海); Zheng ZY(郑中玉); Wang YR(王育人) | |
发表期刊 | CHINESE PHYSICS LETTERS |
2019-03-01 | |
卷号 | 36期号:3页码:4 |
ISSN | 0256-307X |
摘要 | We study the Brownian motion of a single ellipsoidal particle diffusing in a narrow channel by video-microscopy measurement. The experiments allow us to obtain the trajectories of ellipsoids and measure the diffusion coefficients. It is found that the channel constraints lead to suppression of the particle motion, especially the perpendicular motion to the channel, and the long axis of the particle tends to be parallel to the channel. A stable stratification phenomenon is observed, which is rarely discussed in studies of spherical particles. We also derive an approximate solution of theoretical prediction with the method of reflections, and obtain numerical simulation results using finite element software. They are proven to be effective by comparing them with the experimental results. All of these indicate that the aspect ratio and size of ellipsoid, the width of channel, and the transverse position distinctly affect the Brownian motion of ellipsoids. |
DOI | 10.1088/0256-307X/36/3/034701 |
收录类别 | SCI ; EI ; CSCD |
语种 | 英语 |
WOS记录号 | WOS:000460822000013 |
关键词[WOS] | DIFFUSION |
WOS研究方向 | Physics |
WOS类目 | Physics, Multidisciplinary |
资助项目 | National Natural Science Foundation of China[U1738118] ; National Natural Science Foundation of China[11472275] ; Chinese Academy of Sciences[XDB22040301] ; Chinese Academy of Sciences[XDA04020202] ; Chinese Academy of Sciences[XDA04020406] |
项目资助者 | National Natural Science Foundation of China ; Chinese Academy of Sciences |
论文分区 | Q4 |
力学所作者排名 | 1 |
RpAuthor | Wang, YR |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/78517 |
专题 | 微重力重点实验室 |
作者单位 | 1.{Li, Han-Hai、Zheng, Zhong-Yu、Wang, Yu-Ren} Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100190, Peoples R China 2.{Li, Han-Hai、Zheng, Zhong-Yu、Wang, Yu-Ren} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Li HH,Zheng ZY,Wang YR. Constrained Brownian Motion of a Single Ellipsoid in a Narrow Channel[J]. CHINESE PHYSICS LETTERS,2019,36,3,:4. |
APA | Li HH,Zheng ZY,&Wang YR.(2019).Constrained Brownian Motion of a Single Ellipsoid in a Narrow Channel.CHINESE PHYSICS LETTERS,36(3),4. |
MLA | Li HH,et al."Constrained Brownian Motion of a Single Ellipsoid in a Narrow Channel".CHINESE PHYSICS LETTERS 36.3(2019):4. |
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