4.5 Article

Joule heating effects in optimized insulator-based dielectrophoretic devices: An interplay between post geometry and temperature rise

期刊

ELECTROPHORESIS
卷 40, 期 10, 页码 1408-1416

出版社

WILEY
DOI: 10.1002/elps.201800490

关键词

Dielectrophoresis; Joule heating; Microfluidics; Sensors; Temperature

资金

  1. National Science Foundation [CBET-1705895]
  2. Nano-Sensors and Devices Research Group of Tecnologico de Monterrey [0020209I06]

向作者/读者索取更多资源

Insulator-based dielectrophoresis (iDEP) is the electrokinetic migration of polarized particles when subjected to a non-uniform electric field generated by the inclusion of insulating structures between two remote electrodes. Electrode spacing is considerable in iDEP systems when compared to electrode-based DEP systems, therefore, iDEP systems require high voltages to achieve efficient particle manipulation. A consequence of this is the temperature increase within the channel due to Joule heating effects, which, in some cases, can be detrimental when manipulating biological samples. This work presents an experimental and modeling study on the increase in temperature inside iDEP devices. For this, we studied seven distinct channel designs that mainly differ from each other in their post array characteristics: post shape, post size and spacing between posts. Experimental results obtained using a custom-built copper Resistance Temperature Detector, based on resistance changes, show that the influence of the insulators produces a difference in temperature rise of approximately 4 degrees C between the designs studied. Furthermore, a 3D COMSOL model is also introduced to evaluate heat generation and dissipation, which is in good agreement with the experiments. The model allowed relating the difference in average temperature for the geometries under study to the electric resistance posed by the post array in each design.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据