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Related Experiment Videos

Microfluidic operations using deformable polymer membranes fabricated by single layer soft lithography.

Narayan Sundararajan1, Dongshin Kim, Andrew A Berlin

  • 1Precision Biology, CTM/Intel Research, Intel Corp., 2200 Mission College Blvd., Santa Clara, CA 95054, USA. narayan.sundararajan@intel.com

Lab on a Chip
|February 24, 2005
PubMed
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This study demonstrates single-layer soft lithography for creating deformable polymer membranes in microfluidic chips. These membranes enable efficient pumping, sorting, and mixing for various microfluidic applications.

Area of Science:

  • Microfluidics
  • Polymer Science
  • Soft Lithography

Background:

  • Microfluidic devices offer precise control over small fluid volumes.
  • Developing versatile and cost-effective microfluidic components is crucial for advancing lab-on-a-chip technologies.

Purpose of the Study:

  • To investigate the use of single-layer soft lithography for fabricating deformable polymer membranes.
  • To demonstrate the application of these membranes in microfluidic pumping, sorting, and mixing operations.

Main Methods:

  • Single-layer soft lithography was employed to design and fabricate microfluidic chips with integrated deformable membranes.
  • Pneumatic actuation was utilized to control the membrane movement for various microfluidic functions.

Main Results:

Related Experiment Videos

  • Peristaltic pumping achieved flow rates up to 0.39 microliters per minute using pneumatically-actuated membranes.
  • Effective sorting of particles was demonstrated by actuating membrane units in branch channels.
  • An active microfluidic mixer was successfully developed using single-layer deformable membrane units.

Conclusions:

  • Single-layer soft lithography provides a viable method for creating functional deformable membranes in microfluidics.
  • These membrane-based devices are versatile and can be applied to multiple microfluidic operations, including pumping, sorting, and mixing.