Electrokinetics in microfluidic channels containing a floating electrode
Electrokinetics in microfluidic channels containing a floating electrode
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DOI：
10.1021/ja8036405
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发表时间：
2008-08-13
影响因子：
15
通讯作者：
Crooks, Richard M.
中科院分区：
文献类型：
--
作者：
Dhopeshwarkar, Rahul;Hlushkou, Dzmitry;Crooks, Richard M.
研究了含平面双极电极的缓冲填充微通道内的电动传输。关键的发现是电极的存在破坏了电流通过微通道，从而改变了局部电场的均匀性。电渗透流进一步调节了局部电场梯度。这些动力学通过利用带负电荷的示踪分子浓度富集的场梯度实验证明，并提出了一组计算机模拟来解释潜在的电动力学。
Electrokinetic transport within a buffer-filled microchannel incorporating a flat bipolar electrode is investigated. The key finding is that the presence of the electrode disrupts the passage of electrical current through the microchannel and thereby alters the uniformity of the local electric field. Electroosmotic flow further modulates the local field gradient. These dynamics are demonstrated experimentally by utilizing the field gradient for concentration enrichment of negatively charged tracer molecules, and a set of computer simulations is presented to interpret the underlying electrokinetics.