Consumer-Grade Inkjet Printer for Versatile and Precise Chemical Deposition

Area of Science:

• Biomedical Engineering
• Materials Science
• Chemical Engineering

Background:

• Consumer-grade inkjet printers have limited substrate compatibility and print precision.
• Existing methods for loading microdevices and microfluidic systems can be imprecise or slow.

Purpose of the Study:

• To enhance the capabilities of consumer inkjet printers for advanced applications.
• To enable precise, multi-material loading into microdevices for personalized medicine.
• To facilitate quasi-simultaneous reactant delivery in microfluidic systems.

Main Methods:

• Mechanical modifications including roller isolation bars and spring loadings were added to a consumer inkjet printer.
• The modified printer's ability to print on diverse substrates (rigid, elastic, liquid, granular, sticky) was tested.
• Print precision was evaluated, showing up to a 50-fold increase.
• The system was used for tunable loading of drug combinations into microdevices.
• Array-type printheads were utilized for quasi-simultaneous loading of reactants into microfluidic systems.

Main Results:

• The modified inkjet printer demonstrated greatly increased substrate compatibility.
• Print precision was enhanced up to 50-fold, allowing for precise alignment.
• Tunable loading of drug combinations into microdevices was successfully demonstrated.
• Quasi-simultaneous loading of reactants into microfluidic systems was achieved using array-type printheads.

Conclusions:

• Simple mechanical modifications significantly expand the applicability of consumer inkjet printers.
• The enhanced printer is suitable for point-of-care personalized medication delivery.
• The system offers a valuable tool for studying rapidly reacting chemical systems in microfluidics.