摘要
微通道中的介电泳颗粒流动是芯片实验室装置的最重要应用之一.生物和医学领域的实际应用中,为获得足够的介电泳颗粒控制能力,在高电导率的电解溶液上施加强电场,而这将引起溶液温度的明显升高.本文建立了介电泳颗粒流动中的电场分布和焦耳热效应的理论模型.对介电泳微通道中电解溶液中的电场与温度场进行了计算,分析了介电泳作用下产生的焦耳热对微通道内温度场的影响.
Dielectrophoresis （DEP） based on the process of particle flow in micro-channel is one of the most important operations required for many lab-on-a-chip devices. In order to obtain sufficient dielectrophoretic particle manipulation in biological and medical fields, high electric field is applied in electrolyte of high electric conductivity practically which will lead to a remarkable increase in solution temperature. A theoretical model of electric field distribution and Joule heating effect on particle flow in micro-channel by dielectrophoresis was presented in this paper. The electric field distribution and temperature distribution in a micro-channel were simulated. The Joule heating effects on the temperature distribution were analyzed.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2008年第3期476-478,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50476044)
关键词
介电泳
微通道
颗粒流动
焦耳热
dielectrophoresis
micro-channel
particle flow
Joule heating
