Droplet jumping by electrowetting and its application to the three-dimensional digital microfluidics

被引：58

作者：

Lee, Seung Jun ^{[1
]}

Lee, Sanghyun ^{[1
]}

Kang, Kwan Hyoung ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 790784, South Korea

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (R0A-2007-000-20098-0);

D O I：

10.1063/1.3688487

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We introduce droplet jumping by electrowetting (DJE), which stretches droplets to store energy for jumping by electrowetting. The capillarity-driven droplet jumping is effective to overcome the energy barrier, where the threshold for jumping is less than 100 V. We studied the detailed jumping mechanisms with regard to the jumping height and the energy conversion and demonstrated the transport of sessile droplets to upper surfaces under diverse electrode configurations. While the droplet jumping on the superhydrophobic surface is the primary focus of our research, DJE is also found to be possible on conventional Teflon surfaces, envisioning the three-dimensional droplet-based digital microfluidics. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3688487]

引用

页数：3

共 21 条

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