Sticker Microfluidics: A Method for Fabrication of Customized Monolithic Microfluidics

Area of Science:

• Microfluidics
• Materials Science
• Biotechnology

Background:

• Traditional microfluidic fabrication often requires specialized equipment and complex assembly.
• Modular designs combining multiple chips can be cumbersome and limit integration.
• A need exists for accessible, customizable microfluidic systems.

Purpose of the Study:

• To develop an instrument-free, all-in-one toolbox for rapid customization of integrated microfluidic systems.
• To introduce a novel "template sticker" method for fabricating monolithic microfluidic devices.
• To demonstrate the versatility and cost-effectiveness of the proposed fabrication strategy.

Main Methods:

• Batch production of sacrificial templates as standardized "template stickers".
• User-guided assembly of template stickers to create customized monolithic microfluidic systems.
• Fabrication and testing of various functional microfluidic devices, including on curved surfaces.

Main Results:

• Successful creation of well-defined microscale features using the sticker method.
• Demonstration of instrument-free, inexpensive, and time-saving microfluidic fabrication.
• Development of a colorimetric testing platform for nitrite ion detection as a proof of concept.

Conclusions:

• The "template sticker" toolbox offers a novel, self-contained platform for prompt microfluidic device customization.
• This approach enables the deployment of microfluidics with both high performance and user-defined adaptability.
• The method significantly lowers the barrier to entry for microfluidic system development and application.