A new droplet breakup phenomenon in electrokinetic flow through a microchannel constriction

被引：1

作者：

Ji, Xiang ^{[1
]}

Zhou, Teng ^{[1
]}

Deng, Yongbo ^{[2
]}

Shi, Liuyong ^{[1
]}

Zhang, Xianman ^{[1
]}

Joo, Sang Woo ^{[3
]}

机构：

[1] Hainan Univ, Mech & Elect Engn Coll, Haikou 570228, Hainan, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys CIOMP, Changchun, Jilin, Peoples R China

[3] Yeungnam Univ, Sch Mech Engn, Gyongsan, South Korea

来源：

ELECTROPHORESIS | 2020年 / 41卷 / 10-11期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

Dielectrophoresis; Droplet breakup; Microchannel constriction; Microfluidics; MST method; PARTICLE; SEPARATION; MICROPARTICLES; MICROFLUIDICS;

D O I：

10.1002/elps.201900140

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A completely new droplet breakup phenomenon is reported for droplets passing through a constriction in an electrokinetic flow. The breakup occurs during the droplet shape recovery process past the constriction throat by the interplay of the dielectrophoretic stress release and the interface energy for droplets with smaller permittivity than that of the ambient fluid. There are conditions for constriction ratios and droplet size that the droplet breakup occurs. The numerical predictions provided here require experimental verification, and then can give rise to a novel microfluidic device design with novel droplet manipulations.

引用

页码：758 / 760

页数：3

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