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Related Concept Videos

Capillary Electrophoresis: Instrumentation01:20

Capillary Electrophoresis: Instrumentation

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Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
336
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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Electrophoresis: Overview01:20

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Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
There...
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Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
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High-throughput dielectrophoretic separator based on printed circuit boards.

Jasper Giesler1, Laura Weirauch1, Jorg Thöming1,2,3

  • 1Chemical Process Engineering, Faculty of Production Engineering, University of Bremen, Leobener Straße 6, 28359, Bremen, Germany.

Electrophoresis
|August 15, 2022
PubMed
Summary
This summary is machine-generated.

This study presents an affordable dielectrophoresis (DEP) separator using printed circuit boards for efficient particle separation. The device achieves high throughput for nanoscale particle separation, overcoming limitations of current microfluidic systems.

Keywords:
dielectrophoresishigh-throughputlab-on-pcbselective trappingseparation

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Area of Science:

  • Biotechnology
  • Materials Science
  • Chemical Engineering

Background:

  • Particle separation is crucial in biotechnology and waste recycling, especially for nanoscale particles.
  • Existing separation techniques often struggle with low throughput or poor selectivity for small particles.
  • Dielectrophoresis (DEP) offers potential for multi-property particle manipulation but is limited by microfluidic throughput and expensive fabrication.

Purpose of the Study:

  • To develop and characterize an affordable DEP-based particle separator with increased throughput.
  • To overcome the limitations of conventional microfluidic DEP systems.
  • To demonstrate selective particle separation using inexpensive printed circuit boards.

Main Methods:

  • Designed and fabricated custom printed circuit boards (80 × 120 mm) with interdigitated electrode arrays.
  • Utilized polystyrene particles (500 nm to 5 µm) for monodisperse separation experiments.
  • Tested selective trapping of binary particle mixtures at flow rates up to 240 ml/h.

Main Results:

  • Demonstrated effective separation of polystyrene particles across a range of sizes (500 nm to 5 µm).
  • Achieved selective trapping of binary particle mixtures at high flow rates (up to 240 ml/h).
  • Validated the use of inexpensive printed circuit boards for DEP particle separation.

Conclusions:

  • The developed DEP separator offers an affordable and high-throughput solution for nanoscale particle separation.
  • This approach significantly enhances the practicality and scalability of electrode-based DEP separators.
  • The technology holds promise for applications in biotechnology and electronic waste recycling.