电渗
电极
机械
电解质
振幅
流体力学
电压
流量(数学)
微电极
电位
化学
材料科学
物理
光学
电泳
色谱法
物理化学
量子力学
作者
António Ramos,Hywel Morgan,Nicolas G. Green,Antonio González,A. Castellanos
摘要
Net flow of electrolyte induced by a traveling-wave electric potential applied to an array of microelectrodes is reported. Two fluid flow regimes have been observed: at small-voltage amplitudes the fluid flow follows the direction of the traveling wave, and at higher-voltage amplitudes the fluid flow is reversed. In both cases, the flow seems to be driven at the level of the electrodes. The experiments have been analyzed with a linear electroosmotic model based upon the Debye–Huckel theory of the double layer. The electrical problem for the experimental interdigitated electrode array is solved numerically using a truncated Fourier series. The observations at low voltages are in qualitative accordance with the electroosmotic model.
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