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Updated: May 27, 2026

A Microfluidic-based Hydrodynamic Trap for Single Particles

A Microfluidic-based Hydrodynamic Trap for Single Particles

Published on: January 21, 2011

Selective trapping and manipulation of microscale objects using mobile microvortices.

Tristan Petit¹, Li Zhang, Kathrin E Peyer

¹Institute of Robotics and Intelligent Systems, ETH Zurich, CH-8092 Zurich, Switzerland.

|November 25, 2011

Summary

This summary is machine-generated.

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Researchers developed a novel microfluidic technique using microvortices to trap and manipulate microscale objects. This method offers versatile control over diverse materials in fluid environments without material property restrictions.

Area of Science:

Physics, Applied Physics
Fluid Dynamics
Microfluidics

Background:

Precise manipulation of microscale objects is crucial for various scientific and technological applications.
Existing methods often face limitations regarding material compatibility and control resolution.

Purpose of the Study:

To introduce a new strategy for trapping and manipulating individual micro- and nanoscale objects in fluid.
To demonstrate the versatility of microvortex-based fluidic trapping for diverse materials.

Main Methods:

Generating mobile microvortices using magnetic microactuators (rotating nanowires or microbeads).
Actuating microactuators with a weak rotating magnetic field (less than 5 mT).
Utilizing the fluidic trapping forces directed towards the microvortex center.

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Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

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Last Updated: May 27, 2026

A Microfluidic-based Hydrodynamic Trap for Single Particles

A Microfluidic-based Hydrodynamic Trap for Single Particles

Published on: January 21, 2011

Scanning SQUID Study of Vortex Manipulation by Local Contact

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Main Results:

Successfully trapped and manipulated single microspheres and microorganisms.
Demonstrated precise control of objects near a solid surface in water.
Showcased the ability to manipulate objects with no restrictions on material properties.

Conclusions:

The microvortex strategy provides a powerful and versatile tool for micro-object manipulation.
This technique overcomes limitations of existing methods, enabling broader applications in microfluidics and nanotechnology.