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Updated: Aug 6, 2026
A Droplet-Based Microfluidic Approach and Microsphere-PCR Amplification for Single-Stranded DNA Amplicons
Published on: November 14, 2018
Protocol for programming DNA crystal morphology using concentration-modulated W/O/W double-emulsion microfluidic
Jia Liu1, Xugen Chen2, Lebing Wang3
1Laboratory of Advanced Theranostic Materials and Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China; Ningbo Cixi Institute of Biomedical Engineering, Ningbo, Zhejiang 315201, China.
Researchers developed a microfluidic protocol to precisely control DNA crystal shapes using concentration-modulated double-emulsion droplets (DEDs). This method allows for predictable encapsulation and tailored crystal morphology in DNA systems.
Area of Science:
- Materials Science
- Biotechnology
- Chemical Engineering
Background:
- Controlling the morphology of DNA crystals is crucial for advanced material applications.
- Existing methods for generating DNA crystals often lack precise control over shape and size.
Purpose of the Study:
- To present a protocol for generating concentration-modulated water-in-oil-in-water (W/O/W) double-emulsion droplets (DEDs).
- To program and control DNA crystal morphology using these DEDs.
- To enable predictable encapsulation and tailored crystal structures.
Main Methods:
- Assembly of a dual-inner-phase glass capillary microfluidic device.
- Flow-rate-controlled co-encapsulation of inner phases within W/O/W DEDs.
- Osmotic shrinkage of DEDs and image-based morphology analysis.
Main Results:
- Validated encapsulation predictability using methylene blue as a model substance.
- Achieved aspect-ratio control for 2T DNA crystals.
- Demonstrated directional morphology regulation in 13-mer DNA systems.
Conclusions:
- The presented microfluidic protocol offers precise control over DNA crystal morphology.
- This method facilitates the programming of crystal structures for advanced applications.
- The protocol is robust and validated for predictable encapsulation and morphology control.
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