Cetin Barbaros, Li Dongqing
Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA.
Electrophoresis. 2008 Mar;29(5):994-1005. doi: 10.1002/elps.200700601.
The Joule heating (JH) is a ubiquitous phenomenon in electrokinetic flow due to the presence of electrical potential gradient and electrical current. JH may become pronounced for applications with high electrical potential gradients or with high ionic concentration buffer solutions. In this review, an in-depth look at the effect of JH on electrokinetic processes is provided. Theoretical modeling of EOF and electrophoresis (EP) with the presence of JH is presented and the important findings from the previous studies are examined. A numerical study of a fused-silica capillary PCR reactor powered by JH is also presented to extend the discussion of favorable usage of JH.
由于存在电势梯度和电流，焦耳热（JH）在电动流中是一种普遍存在的现象。对于具有高电势梯度或高离子浓度缓冲溶液的应用，焦耳热可能会变得很显著。在本综述中，深入探讨了焦耳热对电动过程的影响。介绍了存在焦耳热时电渗流（EOF）和电泳（EP）的理论模型，并审视了先前研究的重要发现。还给出了一个由焦耳热驱动的熔融石英毛细管PCR反应器的数值研究，以拓展关于焦耳热有利应用的讨论。
