An experimental study of electro-osmotic flow in rectangular microchannels
An experimental study of electro-osmotic flow in rectangular microchannels
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DOI：
10.1017/s0022112004008626
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发表时间：
2004-05-10
影响因子：
3.7
通讯作者：
Conlisk, AT
中科院分区：
文献类型：
--
作者：
Sadr, R;Yoda, M;Conlisk, AT
对矩形通道中充分发展的稳态电渗流进行了实验研究，通道高度h与宽度相当，以德拜长度表征的双电层厚度远小于h。纳米粒子图像测速技术被用来测量的两个组件的速度场平行于和约100 nm内的通道壁为h小于或等于25 μ m。粒子示踪剂的流动性计算从平均速度数据为各种电场强度。实验确定的迁移率值进行了比较与分析预测的四硼酸钠稀水溶液。
Experimental studies were carried out on fully developed and steady electro-osmotic flow in a rectangular channel where the channel height h is comparable to its width and the thickness of the electric double layer characterized by the Debye length is much less than h. The nano-particle image velocimetry technique was used to measure the two components of the velocity field parallel to and within about 100 nm of the channel wall for h less than or equal to 25 mum. The mobility of the particle tracers was calculated from averaged velocity data for various electric field strengths. The experimentally determined mobility values are compared with analytical predictions for dilute aqueous solutions of sodium tetraborate.