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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...
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Capillary Electrophoresis: Applications01:30

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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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Related Experiment Video

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Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device
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Double emulsions from a capillary array injection microfluidic device.

Luoran Shang1, Yao Cheng, Jie Wang

  • 1State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China. yjzhao@seu.edu.cn gu@seu.edu.cn.

Lab on a Chip
|July 16, 2014
PubMed
Summary
This summary is machine-generated.

A novel microfluidic device enables single-step creation of double emulsions using an annular capillary array. This versatile system can also produce multicomponent emulsions and microcapsules with varied inner droplet contents.

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Area of Science:

  • Chemical Engineering
  • Materials Science
  • Biotechnology

Background:

  • Double emulsions are complex droplet systems with applications in drug delivery and food science.
  • Current methods for producing double emulsions can be complex and lack control over droplet composition.

Purpose of the Study:

  • To develop a facile microfluidic device for the single-step production of double emulsions.
  • To demonstrate the capability of producing multicomponent double emulsions and microcapsules with diverse inner contents.

Main Methods:

  • Fabrication of a microfluidic device by integrating an annular capillary array into a collection channel.
  • Introduction of multiple inner-phase solutions into the capillary array for controlled emulsification.

Main Results:

  • Successful single-step emulsification of double emulsions was achieved.
  • The device facilitated the generation of multicomponent double emulsions with distinct inner droplets.
  • Microcapsules containing inner droplets of varying compositions were also produced.

Conclusions:

  • The developed microfluidic device offers a simple and efficient method for generating double emulsions.
  • The system provides versatility for creating complex emulsion structures with tunable compositions.
  • This technology holds potential for advanced applications in encapsulation and controlled release systems.