Droplet Microfluidic-Based Low-Cost and High-Speed Microsphere Array Direct Writing Technology and Its Applications

Area of Science:

• Materials Science
• Microfluidics
• Chemical Biology

Background:

• Microsphere arrays are crucial in various scientific fields.
• Developing simple, efficient, and controllable methods for microsphere array fabrication remains a challenge.

Purpose of the Study:

• To develop a novel, low-cost, and efficient direct writing technology for microsphere array preparation.
• To demonstrate the versatility of the technology in fabricating diverse microsphere arrays.

Main Methods:

• Utilized a portable droplet microfluidic device and a high-precision XY movable platform for direct writing.
• Employed microsphere arrays as templates for fabricating patterned gel microspheres.
• Developed simulated microsphere arrays for 3D tumor spheroid generation.

Main Results:

• Successfully fabricated microsphere arrays with controlled sizes, shapes, structures, and arrangements.
• Demonstrated the application of patterned gel microsphere arrays in visual analytical detection of heavy metal ions.
• Showcased the potential of simulated microsphere arrays for generating uniform and viable 3D tumor spheroids.

Conclusions:

• The developed direct writing technology offers a simple, high-speed, and controllable method for microsphere array fabrication.
• This technology has significant potential applications at the intersection of chemical, biological, and material sciences.
• Microsphere arrays fabricated using this method show promise in diagnostics and biomedical research.