Liquid metal enabled pump
Liquid metal enabled pump
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DOI：
10.1073/pnas.1319878111
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发表时间：
2014-03-04
影响因子：
11.1
通讯作者：
Kalantar-zadeh, Kourosh
中科院分区：
文献类型：
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作者：
Tang, Shi-Yang;Khoshmanesh, Khashayar;Kalantar-zadeh, Kourosh
小型泵将是许多未来微/纳米平台的心脏。然而，目前小型泵的集成受到相对于输入功率的流量有限以及其相当复杂的制造工艺的阻碍。这些问题的出现是因为许多传统的泵送效果需要复杂的运动元件。在这里，我们演示了一种系统，我们称之为液态金属使能泵，在施加适度电场的情况下，用于驱动一系列液体，而不需要机械移动部件。该泵结合了液态金属液滴，在高流量下诱导液体流动，同时通过在金属表面进行电润湿/去电润湿来实现极低的功率消耗。我们提出了解释这种泵送机理的理论，并表明这种泵的运行方式与现有的其他泵有根本的不同。所提出的液态金属驱动泵既高效又简单，因此有可能从根本上推动微流体领域的发展。
Small-scale pumps will be the heartbeat of many future micro/nanoscale platforms. However, the integration of small-scale pumps is presently hampered by limited flow rate with respect to the input power, and their rather complicated fabrication processes. These issues arise as many conventional pumping effects require intricate moving elements. Here, we demonstrate a system that we call the liquid metal enabled pump, for driving a range of liquids without mechanical moving parts, upon the application of modest electric field. This pump incorporates a droplet of liquid metal, which induces liquid flow at high flow rates, yet with exceptionally low power consumption by electrowetting/deelectrowetting at the metal surface. We present theory explaining this pumping mechanism and show that the operation is fundamentally different from other existing pumps. The presented liquid metal enabled pump is both efficient and simple, and thus has the potential to fundamentally advance the field of microfluidics.