Flow rate analysis of a surface tension driven passive micropump
Flow rate analysis of a surface tension driven passive micropump
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DOI：
10.1039/b707637a
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发表时间：
2007-01-01
期刊：
影响因子：
6.1
通讯作者：
Beebe, David J.
中科院分区：
文献类型：
--
作者：
Berthier, Erwin;Beebe, David J.
研究了一种基于表面张力特性的微流体被动抽运方法，建立了物理模型。当小的入口液滴被放置在微流体通道的入口上时，它在通道出口处产生比大的输出液滴更大的压力，从而引起流体流动。输入电压降的行为发生在两个特征阶段。提出了一个解析解，并通过实验结果进行了验证。我们发现，在第一阶段的流速是稳定的，这一阶段可以延长通过重新填充的入口下降，以产生连续的流动在微通道。
A microfluidic passive pumping method relying on surface tension properties is investigated and a physical model is developed. When a small inlet drop is placed on the entrance of a microfluidic channel it creates more pressure than a large output drop at the channel exit, causing fluid flow. The behavior of the input drop occurs in two characteristic phases. An analytical solution is proposed and verified by experimental results. We find that during the first phase the flow rate is stable and that this phase can be prolonged by refilling the inlet drop to produce continuous flow in the microchannel.