一种微粒相互作用及其介电泳动力学仿真新方法

doi:10.12068/j.issn.1005-3026.2021.08.004

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (8): 1086-1091.DOI: 10.12068/j.issn.1005-3026.2021.08.004

一种微粒相互作用及其介电泳动力学仿真新方法

胡晟^{1, 2}，吴怀京¹，吕晓永^1,2

(1. 东北大学秦皇岛分校控制工程学院，河北秦皇岛066004; 2. 东北大学秦皇岛分校河北省微纳精密光学传感与检测技术重点实验室，河北秦皇岛066004)

修回日期:2020-03-26 接受日期:2020-03-26 发布日期:2021-09-02
通讯作者: 胡晟
作者简介:胡晟(1984-)，男，云南景洪人，东北大学副教授.
基金资助:
国家自然科学基金资助项目(61903069)；河北省自然科学基金资助项目(F2020501040).

A Novel Approach to Simulate Particle-Particle Interaction and Dielectrophoretic Dynamics

HU Sheng^1,2， WU Huai-jing¹， LYU Xiao-yong^1,2

1. School of Control Engineering， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China.

Revised:2020-03-26 Accepted:2020-03-26 Published:2021-09-02
Contact: HU Sheng
About author:-
Supported by:
-

摘要/Abstract

摘要： 采用有限元法进行粒子电极化强度的计算，以此得到对应的介电泳力和次级介电泳力.粒子的极化强度依托软件COMSOL Multiphysics 5.3a的AC/DC模块计算得到，粒子追踪模块用于实现介电泳力、次级介电泳力、流体力，以及排斥力的粒子动力学仿真.AC/DC模块和粒子追踪模块的多物理场耦合新方法能够满足正、负介电泳效应的粒子运动分析和研究，且粒子轨迹与常用的粒子仿真算法的运算结果有较高的相似性.同时仿真结果还表明，为了更准确地预测实验观测结果，粒子承受金属电极形成的正、负介电泳效应需要考虑次级介电泳力.

关键词: 介电泳;粒子链;流体动力学;COMSOL

Abstract: Electrical polarization strength of a particle is calculated by finite element method to obtain the dielectrophoretic and the secondary dielectrophoretic forces. Relying on the commercial software COMSOL Multiphysics 5.3a， the electrical polarization strength can be obtained in the AC/DC module from COMSOL， and then the module of particle tracing for fluid flow(PTF)is used to realize the dynamic simulation of particles on which the dielectrophoretic force， secondary dielectrophoretic force， fluid force and repulsive force are exerted. This novel method in which AC/DC module coupled PTF module in multi-physical fields provides an insight into the particle trajectories with positive or negative dielectrophoresis， which has a good agreement in other particle simulation methods. Whatever positive or negative dielectrophoresis is， these results imply that it is essential to consider secondary dielectrophoretic effect on metal electrodes to improve the prediction of experimental observation.

Key words: dielectrophoresis; particle chain; hydrodynamics; COMSOL

中图分类号:

O442
TL501

胡晟，吴怀京，吕晓永. 一种微粒相互作用及其介电泳动力学仿真新方法[J]. 东北大学学报（自然科学版）, 2021, 42(8): 1086-1091.

HU Sheng， WU Huai-jing， LYU Xiao-yong. A Novel Approach to Simulate Particle-Particle Interaction and Dielectrophoretic Dynamics[J]. Journal of Northeastern University(Natural Science), 2021, 42(8): 1086-1091.

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一种微粒相互作用及其介电泳动力学仿真新方法

A Novel Approach to Simulate Particle-Particle Interaction and Dielectrophoretic Dynamics

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