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Related Concept Videos

Electrophoresis: Overview01:20

Electrophoresis: Overview

4.0K
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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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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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...
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Two-dimensional Gel Electrophoresis01:22

Two-dimensional Gel Electrophoresis

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Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
5.9K
Centrifugation01:05

Centrifugation

6.8K
Centrifugation is a separation technique based on differences in density or size. It is commonly used to separate solids from aqueous interferents. During centrifugation, the sample is placed in centrifugation tubes and spun at high angular velocity, which allows centrifugal force to act differentially on the different densities or masses of the components. After spinning, the supernatant liquid is decanted. Depending on the specific application, either the pellet or the supernatant is retained...
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Updated: Apr 22, 2026

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
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Dielectrophoresis for bioparticle manipulation.

Cheng Qian1, Haibo Huang2, Liguo Chen3

  • 1Robotics and Microsystems Center, College of Mechanical and Electrical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215000, China. ffsyccc@163.com.

International Journal of Molecular Sciences
|October 14, 2014
PubMed
Summary
This summary is machine-generated.

Dielectrophoresis (DEP) offers an ideal method for manipulating biological particles across various applications. This review covers DEP principles, applications in bioparticle manipulation, and future trends.

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Area of Science:

  • Biophysics
  • Biotechnology
  • Cell Biology

Background:

  • Dielectrophoresis (DEP) is a powerful technique for manipulating biological particles.
  • It has broad applications in clinical diagnosis, disease treatment, drug development, immunoassays, and cell sorting.

Purpose of the Study:

  • To review research on bioparticle manipulation using DEP techniques.
  • To introduce DEP principles and theories.
  • To detail DEP applications in bioparticle manipulation and analyze its effect on viability.

Main Methods:

  • Review of existing literature on dielectrophoresis for bioparticle manipulation.
  • Classification of DEP applications into five key areas.
  • Analysis of DEP's impact on bioparticle viability.

Main Results:

  • DEP enables precise manipulation of bioparticles for various applications.
  • Key applications include capturing, focusing, characterizing interactions, cell pairing, and separation.
  • The effect of DEP on bioparticle viability was analyzed.

Conclusions:

  • Dielectrophoresis is a versatile technique for bioparticle manipulation.
  • Future trends suggest further advancements in DEP applications for biological research and clinical use.