Next Article in Journal
Microfluidic Formation of Honeycomb-Patterned Droplets Bounded by Interface Bilayers via Bimodal Molecular Adsorption
Next Article in Special Issue
The Influence of Electric Field Intensity and Particle Length on the Electrokinetic Transport of Cylindrical Particles Passing through Nanopore
Previous Article in Journal
Design and Simulation of an Integrated Centrifugal Microfluidic Device for CTCs Separation and Cell Lysis
Previous Article in Special Issue
Investigation on the Stability of Random Vortices in an Ion Concentration Polarization Layer with Imposed Normal Fluid Flow
 
 
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Dielectrophoretic Separation of Particles Using Microfluidic Chip with Composite Three-Dimensional Electrode

Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(7), 700; https://doi.org/10.3390/mi11070700
Submission received: 15 June 2020 / Revised: 7 July 2020 / Accepted: 17 July 2020 / Published: 20 July 2020
(This article belongs to the Special Issue Electrokinetics in Micro-/nanofluidic Devices)

Abstract

Integrating three-dimensional (3D) microelectrodes on microfluidic chips based on polydimethylsiloxane (PDMS) has been a challenge. This paper introduces a composite 3D electrode composed of Ag powder (particle size of 10 nm) and PDMS. Ethyl acetate is added as an auxiliary dispersant during the compounding process. A micromachining technique for processing 3D microelectrodes of any shape and size was developed to allow the electrodes to be firmly bonded to the PDMS chip. Through theoretical calculations, numerical simulations, and experimental verification, the role of the composite 3D microelectrodes in separating polystyrene particles of three different sizes via dielectrophoresis was systematically studied. This microfluidic device separated 20-, 10-, and 5-μm polystyrene particles nondestructively, efficiently, and accurately.
Keywords: microfluidic chip; dielectrophoresis; particle separation; microelectrode; composite microfluidic chip; dielectrophoresis; particle separation; microelectrode; composite

Share and Cite

MDPI and ACS Style

Chen, L.; Liu, X.; Zheng, X.; Zhang, X.; Yang, J.; Tian, T.; Liao, Y. Dielectrophoretic Separation of Particles Using Microfluidic Chip with Composite Three-Dimensional Electrode. Micromachines 2020, 11, 700. https://doi.org/10.3390/mi11070700

AMA Style

Chen L, Liu X, Zheng X, Zhang X, Yang J, Tian T, Liao Y. Dielectrophoretic Separation of Particles Using Microfluidic Chip with Composite Three-Dimensional Electrode. Micromachines. 2020; 11(7):700. https://doi.org/10.3390/mi11070700

Chicago/Turabian Style

Chen, Li, Xing Liu, Xiaolin Zheng, Xiaoling Zhang, Jun Yang, Tian Tian, and Yanjian Liao. 2020. "Dielectrophoretic Separation of Particles Using Microfluidic Chip with Composite Three-Dimensional Electrode" Micromachines 11, no. 7: 700. https://doi.org/10.3390/mi11070700

APA Style

Chen, L., Liu, X., Zheng, X., Zhang, X., Yang, J., Tian, T., & Liao, Y. (2020). Dielectrophoretic Separation of Particles Using Microfluidic Chip with Composite Three-Dimensional Electrode. Micromachines, 11(7), 700. https://doi.org/10.3390/mi11070700

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop