Electrowetting-based actuation of liquid droplets for microfluidic applications
Electrowetting-based actuation of liquid droplets for microfluidic applications
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DOI：
10.1063/1.1308534
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发表时间：
2000-09-11
影响因子：
4
通讯作者：
Shenderov, AD
中科院分区：
文献类型：
--
作者：
Pollack, MG;Fair, RB;Shenderov, AD
提出了一种用于离散微液滴快速操作的微驱动器。微致动是通过直接电控制的表面张力，通过两套相对的平面电极制造在玻璃上。制造并测试了由1.5 mm间距的七个电极的线性阵列组成的原型装置。100 mM KCl溶液的液滴（0.7-1.0 μ l）在40-80 V的电压下在相邻电极之间成功地转移。已经证明了在高达20 Hz的电极切换速率和30 mm/s的平均速度下液滴的可重复运输。这一速度比以前证明的用于在固体表面上运输液滴的电方法增加了近100倍。(C)2000年美国物理学会。【S0003-6951（00）01237-7】。
A microactuator for rapid manipulation of discrete microdroplets is presented. Microactuation is accomplished by direct electrical control of the surface tension through two sets of opposing planar electrodes fabricated on glass. A prototype device consisting of a linear array of seven electrodes at 1.5 mm pitch was fabricated and tested. Droplets (0.7-1.0 mu l) of 100 mM KCl solution were successfully transferred between adjacent electrodes at voltages of 40-80 V. Repeatable transport of droplets at electrode switching rates of up to 20 Hz and average velocities of 30 mm/s have been demonstrated. This speed represents a nearly 100-fold increase over previously demonstrated electrical methods for the transport of droplets on solid surfaces. (C) 2000 American Institute of Physics. [S0003-6951(00)01237-7].