Patterning microparticles into a two-dimensional pattern using one column standing surface acoustic waves

被引：23
|
作者：
Zheng, Tengfei [1 ,2 ]
Wang, Chaohui [1 ,2 ]
Xu, Chaoping [1 ,2 ]
Hu, Qiao [1 ,2 ]
Wei, Shoupeng [1 ,2 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, Shaanxi Key Lab Intelligent Robots, Xian 710049, Shaanxi, Peoples R China
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2018年 / 284卷
基金：
中国国家自然科学基金;
关键词：
Standing surface acoustic waves (SSAWs); Acoustic radiation force; Chaining force; Two-dimensional particle pattern; CARBON NANOTUBES; CELLS; MANIPULATION; PARTICLES; SEPARATION;
D O I：
10.1016/j.sna.2018.10.001
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The patterning of micro particles in microfluidic networks is important for many biological and medical applications. In this paper, the micro particles patterns that driven by standing surface acoustic wave (SSAW) are investigated in microchannel. A two-dimensional particle pattern is formed by the micro particles under the actuation of one column SSAW. Two forces, i.e., chaining force generated by interaction of polarized particles, and acoustic radiated force (ARF) generated by the surface acoustic wave (SAW), should dominate the particles assembling process. The intricate and interesting interplay between acoustic radiation force and chaining force on the particles is studied. The analysis and experiment reveal that the ARF drives the particles to form broken line along the nodal line (one-dimensional particle pattern) where the ARF is zero and the chaining force can dominate the particles to form array points (two-dimensional particle pattern) in the area of node. The results will be useful for deeply understanding the particles moving and precisely control the particles patterns induced by SSAW. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：168 / 171
页数：4
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