Dynamic self-assembly of particles in an expanding channel flow

被引：15

作者：

Sun, Dongke ^{[1
]}

Wang, Yong ^{[2
]}

Jiang, Di ^{[1
]}

Xiang, Nan ^{[1
]}

Chen, Ke ^{[1
]}

Ni, Zhonghua ^{[1
]}

机构：

[1] Southeast Univ, Jiangsu Key Lab Design & Mfg Micronano Biomed Ins, Sch Mech Engn, Nanjing 211189, Jiangsu, Peoples R China

[2] Univ Calif Irvine, Dept Mech & Aerosp Engn, Irvine, CA 92697 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 07期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

DISCRETIZED BOLTZMANN-EQUATION; PARTICULATE SUSPENSIONS; NUMERICAL SIMULATIONS; MICROFLUIDIC DEVICES; MODELS;

D O I：

10.1063/1.4818722

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Microfluidic particle crystals, which were previously observed in experiment, can be formed under the mediation of fluid flow. In this letter, we numerically investigated the dynamics of multi particles in an expanding channel, analyzed the fluid-particle interactions during the self-assembling, and revealed the underlying mechanism of the dynamic self-assembly of particles in the presence of fluid flow. Our results show that a pearls-string-like chain can be formed at low Reynolds numbers without external force fields. This research will possibly facilitate the utilization of expanding channel flows to obtain the microfluidic particle crystals for advanced applications in biomedicine and materials synthesis. (C) 2013 AIP Publishing LLC.

引用

页数：4

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