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Published on: December 10, 2011

Analytical detection techniques for droplet microfluidics--a review.

Ying Zhu¹, Qun Fang

¹Institute of Microanalytical Systems, Department of Chemistry, Zhejiang University, Hangzhou, China.

Analytica Chimica Acta

|July 9, 2013

Summary

Droplet microfluidics enables picoliter-scale experiments for single-cell analysis and high-throughput screening. This review details analytical detection techniques crucial for qualitative and quantitative droplet content analysis.

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Area of Science:

Microfluidics
Analytical Chemistry
Biotechnology

Background:

Droplet microfluidics has rapidly advanced single-cell analysis, digital PCR, protein crystallization, and high-throughput screening.
This technology offers a powerful platform for chemical and biological experiments using ultra-small volumes (picoliter to nanoliter) and achieving ultra-high throughput.
Analyzing droplet contents qualitatively and quantitatively is increasingly vital for system development and application.

Purpose of the Study:

To review and summarize analytical detection techniques employed in droplet-based microfluidic systems.
To discuss the advantages and disadvantages of each technique based on its applications.
To highlight the significance of analytical detection in enabling novel applications and explore future directions.

Keywords:

Analytical detection technique Capillary electrophoresis Droplet-based microfluidics Imaging Mass spectrometry Molecular spectroscopy

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Main Methods:

Review of analytical detection techniques including microscopy (bright-field, fluorescence), laser-induced fluorescence, Raman spectroscopy, electrochemistry, capillary electrophoresis, mass spectrometry, nuclear magnetic resonance spectroscopy, absorption detection, and chemiluminescence.
Inclusion of sample pretreatment techniques relevant to droplet analysis.
Discussion of technique applicability and limitations within droplet microfluidic contexts.

Main Results:

Comprehensive overview of diverse analytical methods applicable to droplet microfluidics.
Comparative analysis of the strengths and weaknesses of various detection techniques.
Emphasis on how advanced analytical detection drives innovation and expands the utility of droplet systems.

Conclusions:

Analytical detection techniques are indispensable for the advancement and application of droplet microfluidics.
Understanding the capabilities and limitations of different methods is key to selecting appropriate analytical strategies.
Future developments in analytical detection will further enhance the potential of droplet-based microfluidic systems.