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Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
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Related Experiment Video

Updated: Feb 1, 2026

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

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Microfluidic Device for Cell Trapping with Carbon Electrodes Using Dielectrophoresis.

Paridhi Puri1, Vijay Kumar2, S U Belgamwar3

  • 1Department of Mechanical Engineering, Birla Institute of Technology and Science, Pilani, India. paridhipuri8@gmail.com.

Biomedical Microdevices
|December 12, 2018
PubMed
Summary

This study presents a low-cost, high-throughput method for creating continuous-flow dielectrophoresis (DEP) devices using screen-printing technology and carbon electrodes. The developed DEP devices demonstrate efficient cell trapping and improved performance through glass sealing, offering a cost-effective alternative to traditional methods.

Keywords:
Carbon ElectrodesCell TrappingDielectrophoresisScreen Printing

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Area of Science:

  • Biomedical Engineering
  • Microfluidics
  • Nanotechnology

Background:

  • Dielectrophoresis (DEP) devices are crucial for cell and particle manipulation.
  • Current Microelectromechanical systems (MEMS) based DEP devices face challenges with high cost and low yield.
  • There is a need for cost-effective and high-throughput fabrication methods for DEP devices.

Purpose of the Study:

  • To develop a facile, low-cost, and high-throughput method for constructing continuous-flow DEP devices.
  • To compare the trapping efficiency of carbon electrodes versus gold electrodes in DEP devices.
  • To investigate the impact of glass sealing on DEP device performance and leakage reduction.

Main Methods:

  • Screen-printing technology was employed for fabricating continuous-flow DEP devices.
  • Yeast cells were used as model cells for comparative trapping efficiency studies.
  • Carbon and gold electrodes were fabricated and tested.
  • Adhesive bonding techniques were used to seal carbon DEP devices with glass, replacing PDMS.

Main Results:

  • Screen-printed carbon electrode DEP devices offer a cost-effective and durable alternative to metal electrodes.
  • Glass sealing of carbon DEP devices significantly reduced leakage issues and enhanced device performance.
  • Comparative studies showed promising trapping efficiency for carbon electrode DEP devices.
  • Biocompatibility analysis confirmed the suitability of carbon paste for future carbon-MEMS applications.

Conclusions:

  • Screen-printing offers a viable, low-cost, high-throughput fabrication method for continuous-flow DEP devices.
  • Carbon electrodes, particularly when sealed with glass, provide a cost-effective and high-performance solution for DEP applications.
  • The developed carbon DEP devices show potential for various cell and particle manipulation tasks, including biocompatible applications.