Fluid flow induced by nonuniform ac electric fields in electrolytes on microelectrodes.: I.: Experimental measurements
Fluid flow induced by nonuniform ac electric fields in electrolytes on microelectrodes.: I.: Experimental measurements
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DOI：
10.1103/physreve.61.4011
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发表时间：
2000-04-01
影响因子：
2.4
通讯作者：
Castellanos, A
中科院分区：
文献类型：
--
作者：
Green, NG;Ramos, A;Castellanos, A
在交流电场作用下，电解液在平面微电极上呈流态排列。电极产生的不均匀电场通过多种机制与悬浮液相互作用，产生体力和流体流动。本文给出了电解液电荷弛豫频率以下微电极上流体流动速度的详细实验测量结果。测量了乳胶示踪剂粒子的速度，作为施加信号频率和电位、电解液电导率和电极表面位置的函数。根据交流电渗透的线性模型对数据进行了讨论：非均匀交流电场与感应双电层的相互作用。
Under the influence of an ac electric field, electrolytes on planar microelectrodes exhibit fluid Row. The nonuniform electric field generated by the electrodes interacts with the suspending fluid through a number of mechanisms, giving rise to body forces and fluid flow. This paper presents the detailed experimental measurements of the velocity of fluid flow on microelectrodes at frequencies below the charge relaxation frequency of the electrolyte. The Velocity of latex tracer particles was measured as a function of applied signal frequency and potential, electrolyte conductivity, and position on the electrode surface. The data are discussed in terms of a linear model of ac electroosmosis: the interaction of the nonuniform ac field and the induced electrical double layer.