Particle separation based on dielectrophoresis force using boundary element method and point-particle approach in a microfluidic channel

IF 2.3 4区工程技术 Q2 INSTRUMENTS & INSTRUMENTATION Microfluidics and Nanofluidics Pub Date : 2023-10-24 DOI:10.1007/s10404-023-02694-9

Mostafa Olfat, Erfan Kadivar

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Abstract

Active sorting of particle in the dielectrophoresis microfluidic channel by applying the boundary element method and point-particle approach is investigated. In this paper, we investigate the dynamics of particle sorting for various particle sizes, electrode potential, electrode spacing, and relative permittivity. The microfluidic device consists a straight mother channel, two inlets, two outlets, and up and down triangular electrodes. The boundary element method is applied to numerically solve the integral equations of the Laplace differential equation of electric potential and Stokes differential equation. In continue, the dynamics of particle separation using the point-particle approach is investigated. Numerical results indicate that there are three different particle sorting regimes. They are called by up-outlet, down-outlet, and trapped regimes. The results illustrate that there are a good agreement between two numerical approaches.

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微流体通道中基于介电电泳力的边界元法和点粒子法粒子分离

应用边界元法和点粒子法研究了介电电泳微流体通道中粒子的主动分选。在本文中，我们研究了不同颗粒尺寸、电极电势、电极间距和相对介电常数的颗粒分选动力学。微流体装置由一个直的母通道、两个入口、两个出口和上下三角形电极组成。应用边界元法对拉普拉斯电位微分方程和斯托克斯微分方程的积分方程进行了数值求解。在继续，使用点粒子方法研究粒子分离的动力学。数值结果表明，存在三种不同的颗粒分选方式。它们被上行出口、下行出口和受困政权所召唤。结果表明，两种数值方法之间有很好的一致性。

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来源期刊

Microfluidics and Nanofluidics 工程技术-纳米科技

CiteScore

4.80

自引率

3.60%

发文量

审稿时长

2 months

期刊介绍： Microfluidics and Nanofluidics is an international peer-reviewed journal that aims to publish papers in all aspects of microfluidics, nanofluidics and lab-on-a-chip science and technology. The objectives of the journal are to (1) provide an overview of the current state of the research and development in microfluidics, nanofluidics and lab-on-a-chip devices, (2) improve the fundamental understanding of microfluidic and nanofluidic phenomena, and (3) discuss applications of microfluidics, nanofluidics and lab-on-a-chip devices. Topics covered in this journal include: 1.000 Fundamental principles of micro- and nanoscale phenomena like, flow, mass transport and reactions 3.000 Theoretical models and numerical simulation with experimental and/or analytical proof 4.000 Novel measurement & characterization technologies 5.000 Devices (actuators and sensors) 6.000 New unit-operations for dedicated microfluidic platforms 7.000 Lab-on-a-Chip applications 8.000 Microfabrication technologies and materials Please note, Microfluidics and Nanofluidics does not publish manuscripts studying pure microscale heat transfer since there are many journals that cover this field of research (Journal of Heat Transfer, Journal of Heat and Mass Transfer, Journal of Heat and Fluid Flow, etc.).