文章基本信息

标题：Alternating current electrothermal micromixer with thin film resistive heaters
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作者：Feng Zhang ; Han Chen ; Bo Chen 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2016
卷号：8
期号：5
DOI：10.1177/1687814016646264
语种：English
出版社：Sage Publications Ltd.
摘要：Alternating current electrothermal flow has been extensively used for mixing of fluids in microfluidic systems. This work presents a novel approach to mixing two laminar flow streams in microchannels. The micromixer consists of a pair of asymmetric planar alternating current electrodes disposed along a fluidic channel and a thin film resistive heater below the electrode. Multiphysics (fluid flow, temperature, electrical, and concentration fields) in the micromixer is studied by numerical simulation method. The results indicate that external heating by the thin film resister leads to flow body forces that are proportional to the temperature gradient and chaotic stretching and folding of fluid material lines. Enhancement of mixing is demonstrated by numerical simulation results. Effects of size and location of the thin film resistive heater on mixing efficiency are also investigated.
关键词：Microfluidics; mixing; alternating current electrothermal flow; resistive heater; multiphysics