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Optically induced microfluidic reconfiguration.

Mekala Krishnan1, David Erickson

  • 1Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, USA.

Lab on a Chip
|December 8, 2011
PubMed
Summary
This summary is machine-generated.

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Scientists developed a rapid optofluidic technique to dynamically reconfigure microfluidic channels using light patterns. This method allows for the creation, movement, and removal of solid regions, enabling adaptable microfluidic systems.

Area of Science:

  • Microfluidics
  • Optofluidics
  • Biomolecular Engineering

Background:

  • Reconfigurable systems offer advantages like adaptability and security, but ubiquitous methods are lacking in chip-based technologies.
  • Microfluidics enables precise control over small fluid volumes but often lacks dynamic channel reconfiguration capabilities.

Purpose of the Study:

  • To introduce a rapid optofluidic technique for creating, moving, and removing arbitrary solid regions in microfluidic flows.
  • To demonstrate the potential for reconfigurable flow pathways and morphable channel structures in microfluidics.

Main Methods:

  • Utilizing a spatial light modulation technique combined with a photothermal and thermo-rheological effect.
  • Applying optical patterns to induce changes in microfluidic channel structures on the order of seconds.

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Last Updated: May 26, 2026

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Published on: April 12, 2018

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Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics
09:54

Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics

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Main Results:

  • Successfully created reconfigurable flow pathways and morphable channel structures using light.
  • Demonstrated dynamic trapping of lambda-DNA molecules and nanoparticles, achieving a 25-fold suppression of diffusion.

Conclusions:

  • This optofluidic technique provides a novel approach for dynamic microfluidic system reconfiguration.
  • The developed method shows promise for applications in biomolecular manipulation and lab-on-a-chip devices.