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Related Experiment Video

Updated: Jul 7, 2026

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
09:45

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

Published on: February 4, 2011

Cellular immobilization within microfluidic microenvironments: dielectrophoresis with polyelectrolyte multilayers.

Samuel P Forry1, Darwin R Reyes, Michael Gaitan

  • 1Chemical Science and Technology Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, MS 8394, Gaithersburg, Maryland 20899-8394, USA. sam.forry@nist.gov

Journal of the American Chemical Society
|October 19, 2006
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method for precisely controlling cell placement in biomimetic microenvironments. This technique uses dielectrophoresis (DEP) and polyelectrolyte multilayers (PEMs) to immobilize cells, improving in vitro cell culture and characterization.

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Last Updated: Jul 7, 2026

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
09:45

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

Published on: February 4, 2011

A Microfluidic Platform for High-throughput Single-cell Isolation and Culture
09:51

A Microfluidic Platform for High-throughput Single-cell Isolation and Culture

Published on: June 16, 2016

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
11:14

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

Published on: January 10, 2017

Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Microfluidics

Background:

  • Biomimetic microenvironments aim to replicate in vivo conditions for improved in vitro cell culture.
  • Current methods struggle with precise control over cell attachment, position, and spacing.
  • Controllable cell immobilization is crucial for studying cellular behavior and responses.

Purpose of the Study:

  • To develop a rapid and controllable method for immobilizing suspended mammalian cells in microfabricated environments.
  • To enable precise control over cellular position and facilitate subsequent experimental manipulation.
  • To create a platform for systematic variation of the soluble microenvironment and cellular characterization.

Main Methods:

  • Utilized a combination of dielectrophoresis (DEP) for rapid cellular patterning and polyelectrolyte multilayers (PEMs) for persistent adhesion.
  • Employed intermittent DEP trapping to control cellular position within the microsystem.
  • Applied PEM surface treatments to ensure stable cell attachment after DEP forces were removed.

Main Results:

  • Achieved rapid and controllable immobilization of suspended mammalian cells.
  • Demonstrated persistent cell adhesion after removal of electronic forces through PEM treatment.
  • Established a method enabling systematic variation of the soluble microenvironment for cell studies.

Conclusions:

  • The combined DEP and PEM approach offers enhanced control over cell immobilization in microenvironments.
  • This technique improves in vitro cell culture by mimicking in vivo cellular arrangements.
  • Facilitates advanced cellular characterization and response studies by enabling microenvironment modulation.