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首页> 外文期刊>Electrophoresis: The Official Journal of the International Electrophoresis Society >Microfluidic flow focusing: Drop size and scaling in pressure versus flow-rate-driven pumping.
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Microfluidic flow focusing: Drop size and scaling in pressure versus flow-rate-driven pumping.

机译:微流聚焦:液滴大小和压力缩放与流速驱动泵的关系。

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摘要

We experimentally study the production of micrometer-sized droplets using microfluidic technology and a flow-focusing geometry. Two distinct methods of flow control are compared: (i) control of the flow rates of the two phases and (ii) control of the inlet pressures of the two phases. In each type of experiment, the drop size l, velocity U and production frequency f are measured and compared as either functions of the flow-rate ratio or the inlet pressure ratio. The minimum drop size in each experiment is on the order of the flow focusing contraction width a. The variation in drop size as the flow control parameters are varied is significantly different between the flow-rate and inlet pressure controlled experiments.
机译:我们通过实验研究了使用微流体技术和流聚焦几何结构产生的微米级液滴。比较了两种不同的流量控制方法:(i)控制两相的流速和(ii)控制两相的入口压力。在每种类型的实验中,都将测量液滴尺寸l,速度U和生产频率f,并将其作为流量比或入口压力比的函数进行比较。每个实验中的最小液滴尺寸为流动聚焦收缩宽度a的量级。流量控制参数和进口压力控制实验之间,随着流量控制参数的变化,液滴尺寸的变化也存在显着差异。

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