Electro-osmotic characteristics of Polystyrene microchips – Experiments and modeling

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• 作者：Walter Schrott ; Michal Př ; ibyl ; Jakub Š ; tě ; pá ; nek ; Dalimil Š ; nita
• 关键词：Polystyrene microchip ; DC electro-osmosis ; Electro-osmotic mobility ; Zeta-potential ; Modeling
• 刊名：Microelectronic Engineering
• 出版年：2008
• 期刊代码：91_01679317
• 类别：cp
• 出版时间：May-June 2008
• 卷：85
• 期：5-6
• 页码：1100-1103
• 文件大小：334 K

摘要

Electro-osmotic characteristics such as the electro-osmotic velocity, the electro-osmotic mobility and zeta-potential were determined in polystyrene microfluidic chips by the conductivity (electric current monitoring) method. The capillary microchips were fabricated with the use of micromilling and hot assembling techniques. A linear dependence of the electro-osmotic velocity on the voltage applied on 39 mm long microcapillaries was obtained. The electro-osmotic mobility and zeta-potential were found to be equal to 2.26 ± 0.12 × 10⁻⁸ m² V⁻¹ s⁻¹ and −29.0 ± 1.5 mV, respectively.