Particle manipulation using programmable hydrodynamic forces

Conference paper (2020)

Authors

A. Kislaya Fluid Mechanics - Mechanical, Maritime and Materials Engineering

D.S.W. Tam Fluid Mechanics - Mechanical, Maritime and Materials Engineering

J. Westerweel Fluid Mechanics - Mechanical, Maritime and Materials Engineering

Research Group

Fluid Mechanics (Mechanical, Maritime and Materials Engineering) (TU Delft)

Particle manipulation Hydrodynamic forces Streamlines Virtual channels

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Published Date

2020

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Research Group

Fluid Mechanics

Abstract

Manipulating particles is of interest in diverse fields of engineering. Generally, manipulation activities carried out in micro-devices have a fixed design tailored to specific task. To address this issue, we designed a Hele-Shaw flow cell with "virtual" channels generated by uniform flow in transverse direction and three inlets in the longitudinal axis. These three inlets can inject or dispense fluid in the flow cell to deviate the streamlines. This device provides us the opportunity to integrate multiple functionalities such as particle trapping and separation onto a single device. Since the depth-averaged velocity over the channel in a Hele-Shaw cell is irrotational, we use potential flow theory to predict the flow field for manipulating particles.