Emulsion Designer Using Microfluidic Three-Dimensional Droplet Printing in Droplet

Area of Science:

• Colloid and Surface Chemistry
• Materials Science
• Microfluidics

Background:

• Hierarchical emulsions are valuable for research and applications but traditionally require complex microfluidic setups.
• Existing microfluidic methods for hierarchical emulsions demand intricate device designs and precise flow control.

Purpose of the Study:

• To develop a simplified and flexible method for fabricating hierarchical emulsions using microfluidic 3D droplet printing.
• To demonstrate the versatility of the technique in creating tunable double and triple emulsions.
• To showcase the application of these emulsions as templates for functional materials.

Main Methods:

• Utilized a microfluidic 3D droplet printing in droplet technique, inspired by natural processes.
• Prepared double and triple emulsions with controlled core characteristics (number, size, composition).
• Fabricated flattened crescent-moon-shaped particles using printed double emulsions in confined spaces.

Main Results:

• Successfully demonstrated a versatile and easy-to-process method for hierarchical emulsion fabrication.
• Achieved precise control over the structure of double and triple emulsions.
• Created novel crescent-moon-shaped particles as functional delivery vehicles for 2D interfaces.

Conclusions:

• Microfluidic 3D droplet printing in droplet offers a powerful and flexible platform for designing hierarchical emulsions.
• This technique simplifies the production of complex emulsions, enabling new avenues for functional material development.
• The fabricated particles show promise as magnetically steerable cargo delivery systems.