微流控
粘性液体
流量(数学)
微系统
机械
粘度
流体力学
折叠(DSP实现)
复杂流体
材料科学
纳米技术
物理
机械工程
工程类
复合材料
作者
Thomas Cubaud,Thomas G. Mason
出处
期刊:Soft Matter
[The Royal Society of Chemistry]
日期:2012-01-01
卷期号:8 (41): 10573-10573
被引量:28
摘要
We discuss the formation, evolution, and stability of microfluidic flows involving two or more miscible fluids that have different viscosities. When two liquids that have widely different viscosities are injected into a rigid microfluidic device, their flow streams can naturally rearrange to form lubricated threads or stratified flows depending on the geometry and history of injection. An overview of two-fluid and three-fluid flow configurations in microchannels having square cross-sections is given for a variety of injection geometries. Miscible viscous fluid threads in confined microsystems can experience a range of viscous instabilities, such as folding and swirling. We show that microfluidics can be used to cause two or more instabilities to interact and co-evolve in diverging microchannels, thereby creating a variety of complex flow patterns.
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