| Dramatic change of the self-diffusions of colloidal ellipsoids by hydrodynamic interactions in narrow channels |
| Li HH(李瀚海) ; Zheng ZY(郑中玉); Xie T(谢天); Wang YR(王育人)
|
| 通讯作者 | Zheng, Zhong-Yu(zzy@imech.ac.cn)
; Wang, Yu-Ren(yurenwang@imech.ac.cn)
|
| 发表期刊 | CHINESE PHYSICS B
 |
| 2019-07-01
|
| 卷号 | 28期号:7页码:6 |
| ISSN | 1674-1056
|
| 摘要 | The self-diffusion problem of Brownian particles under the constraint of quasi-one-dimensional (q1D) channel has raised wide concern. The hydrodynamic interaction (HI) plays an important role in many practical problems and two-body interactions remain dominant under q1D constraint. We measure the diffusion coefficient of individual ellipsoid when two ellipsoidal particles are close to each other by video-microscopy measurement. Meanwhile, we obtain the numerical simulation results of diffusion coefficient using finite element software. We find that the self-diffusion coefficient of the ellipsoid decreases exponentially with the decrease of their mutual distance X when X < X-0, where X-0 is the maximum distance of the ellipsoids to maintain their mutual influence, X-0 and the variation rate are related to the aspect ratio p = a/b. The mean squared displacement (MSD) of the ellipsoids indicates that the self-diffusion appears as a crossover region, in which the diffusion coefficient increases as the time increases in the intermediate time regime, which is proven to be caused by the spatial variations affected by the hydrodynamic interactions. These findings indicate that hydrodynamic interaction can significantly affect the self-diffusion behavior of adjacent particles and has important implications to the research of microfluidic problems in blood vessels and bones, drug delivery, and lab-on-chip. |
| 关键词 | hydrodynamic interaction
self-diffusion
ellipsoids
channel
|
| DOI | 10.1088/1674-1056/28/7/074701
|
| 收录类别 | SCI
; EI
; CSCD
|
| 语种 | 英语
|
| WOS记录号 | WOS:000476831100001
|
| 关键词[WOS] | ANOMALOUS DIFFUSION
; SEMIDILUTE
; NANOPARTICLES
; MOBILITY
; MOTION
|
| 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[11372314]
; Strategic Priority Research Program on Space Science
; Chinese Academy of Sciences[XDA04020202]
; Chinese Academy of Sciences[XDA04020406]
; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040301]
|
| 项目资助者 | National Natural Science Foundation of China
; Strategic Priority Research Program on Space Science
; Chinese Academy of Sciences
; Strategic Priority Research Program of the Chinese Academy of Sciences
|
| 论文分区 | Q3
|
| 力学所作者排名 | 1
|
| RpAuthor | Zheng, Zhong-Yu
; Wang, Yu-Ren
|
| 引用统计 |
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/79482
|
| 专题 | 微重力重点实验室
|
推荐引用方式
GB/T 7714 |
Li HH,Zheng ZY,Xie T,et al. Dramatic change of the self-diffusions of colloidal ellipsoids by hydrodynamic interactions in narrow channels[J]. CHINESE PHYSICS B,2019,28,7,:6.
|
| APA |
李瀚海,郑中玉,谢天,&王育人.(2019).Dramatic change of the self-diffusions of colloidal ellipsoids by hydrodynamic interactions in narrow channels.CHINESE PHYSICS B,28(7),6.
|
| MLA |
李瀚海,et al."Dramatic change of the self-diffusions of colloidal ellipsoids by hydrodynamic interactions in narrow channels".CHINESE PHYSICS B 28.7(2019):6.
|
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