Simulation and Experimental Study of Ion Concentration Polarization Induced Electroconvective Vortex and Particle Movement

Author:

Yoon Junghyo,Cho Youngkyu,Kim Jaehoon,Kim Hyunho,Na KyuhwanORCID,Lee Jeong HoonORCID,Chung Seok

Abstract

Ion concentration polarization (ICP) has been widely applied in microfluidic systems in pre-concentration, particle separation, and desalination applications. General ICP microfluidic systems have three components (i.e., source, ion-exchange, and buffer), which allow selective ion transport. Recently developed trials to eliminate one of the three components to simplify the system have suffered from decreased performance by the accumulation of unwanted ions. In this paper, we presented a new ICP microfluidic system with only an ion-exchange membrane-coated channel. Numerical investigation on hydrodynamic flow and electric fields with a series of coupled governing equations enabled a strong correlation to experimental investigations on electroconvective vortices and the trajectory of charged particles. This study has significant implications for the development and optimization of ICP microfluidic and electrochemical systems for biomarker concentration and separation to improve sensing reliability and detection limits in analytic chemistry.

Funder

National Research Foundation of Korea

Korea Evaluation Institute of Industrial Technology

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Ion-exchange membranes in microfluidic devices;Current Trends and Future Developments on (Bio-) Membranes;2024

2. Pressure-driven electrokinetic energy conversion in conical nanochannels with ion concentration polarization;Colloids and Surfaces A: Physicochemical and Engineering Aspects;2023-10

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