Inertial particle separation by differential equilibrium positions in a symmetrical serpentine micro-channel

Jun Zhang; Sheng Yan; Ronald Sluyter; Weihua Li; Gursel Alici; Nam-Trung Nguyen

doi:10.1038/srep04527

Inertial particle separation by differential equilibrium positions in a symmetrical serpentine micro-channel

Scientific Reports ◽

10.1038/srep04527 ◽

2014 ◽

Vol 4 (1) ◽

Cited By ~ 109

Author(s):

Jun Zhang ◽

Sheng Yan ◽

Ronald Sluyter ◽

Weihua Li ◽

Gursel Alici ◽

...

Keyword(s):

Particle Separation ◽

Micro Channel ◽

Inertial Particle

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Dielectrophoretic Separation Motion of a Particle From Electrolyte Solution in Micro-Channel

First International Conference on Integration and Commercialization of Micro and Nanosystems, Parts A and B ◽

10.1115/mnc2007-21312 ◽

2007 ◽

Author(s):

Zhenqian Chen ◽

Mingheng Shi

Keyword(s):

Electric Field ◽

Spherical Particle ◽

Electrolyte Solution ◽

Particle Separation ◽

Viscous Friction ◽

Gravitational Effect ◽

Separation Distance ◽

Uniform Electric Field ◽

Micro Channel ◽

Viscous Friction Force

Dielectrophoresis (DEP) based on the processes of particle separation and particle detection in micro-channel is one of the most important operations required for many lab-on-a-chip devices. To understand the mechanism of the DEP, a theoretical analysis of dielectrophoretic separation motion of a spherical particle in a rectangular micro-channel filled with an aqueous electrolyte solution is presented in this paper. The dimensions of micro-channel are 100 μm in width and 200 μm in length. In this study, driven forces on the particle are analyzed in detail. At the gravitational direction, it is assumed that the density of the spherical particle is higher than that of the solution, and thus the gravitational effect is considered coupled with the buoyancy force and the electric double layer interaction force as well as the van der Waals force. Both the DEP force and the viscous friction force drive the particle separation motion from the solution in micro-channel. The particle separation distance of the particle from the bottom wall by the action of these forces and its motion behavior are analyzed and calculated. The DEP motion along the channel in an applied non-uniform electric field is simulated. Effects of particle’s size, electrolyte solution concentration and applied electric field strength on the DEP motion are discussed.

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Inertial particle separation in helical channels: A calibrated numerical analysis

AIP Advances ◽

10.1063/5.0030930 ◽

2020 ◽

Vol 10 (12) ◽

pp. 125101

Author(s):

Joshua Palumbo ◽

Maryam Navi ◽

Scott S. H. Tsai ◽

Jan K. Spelt ◽

Marcello Papini

Keyword(s):

Numerical Analysis ◽

Particle Separation ◽

Inertial Particle ◽

Helical Channels

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Inertial particle separation in curved networks: A numerical study

Chemical Engineering Science ◽

10.1016/j.ces.2018.02.029 ◽

2018 ◽

Vol 182 ◽

pp. 119-131 ◽

Cited By ~ 5

Author(s):

Ali Dinler ◽

Inci Okumus

Keyword(s):

Numerical Study ◽

Particle Separation ◽

Inertial Particle

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Design and Fabrication of Integrated Microchannel and Peristaltic Micropump System for Inertial Particle Separation

MATEC Web of Conferences ◽

10.1051/matecconf/201815308002 ◽

2018 ◽

Vol 153 ◽

pp. 08002

Author(s):

Utku Sönmez ◽

Muhammed Bekin ◽

Levent Trabzon

Keyword(s):

Flow Rate ◽

Particle Separation ◽

Stepper Motor ◽

Inertial Particle ◽

External Force Field ◽

Micro Total Analysis Systems ◽

Peristaltic Micropump ◽

3D Printed ◽

Controlled Flow ◽

Compact Design

In particle separation applications, conventional syringe pumps are widely used to supply fluid flow into microchannels at a controlled flow rate. However, their bulky structures lack the development of compact particle separation systems which is essential for all LoC (Lab on a Chip) systems. In this study, we designed and fabricated a peristaltic micropump which can be integrated into an inertial particle separation microchannel at the same layer with a compact design. Since inertial particle separation can be done without a need for an external force field, we aimed to develop a μTAS (Micro Total Analysis Systems) system which is able to realize particle separation in an integrated micropump-microchannel system. The circular micropump channel made of two PDMS layers and its width is optimized. The 3D-Printed micropump is actuated by a stepper motor, and the rate of pumped fluid is monitored by an LCD screen connected and programmed to system according to the system parameters. Micropump has a theoretical capacity of supplying particle carrying fluid at the flow rate of 25.47 ml/min when the stepper motor is rotated at 330 rpm.

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