Method for Attaining Dimensionally Accurate Conditions for High-Resolution Three-Dimensional Printing Ceramic...

Area of Science:

• Materials Science
• Additive Manufacturing
• Optical Engineering

Background:

• Continuous Liquid Interface Production (CLIP) enables rapid 3D printing by using projection ultraviolet (UV) light and oxygen inhibition.
• Incorporating ceramic particles into photocurable polymers allows for complex ceramic part fabrication.
• Ceramic particle scattering of UV light in microCLIP alters feature dimensions and curing depth, complicating process control.

Purpose of the Study:

• To develop a systematic framework for optimizing microCLIP process parameters for ceramic inks.
• To balance the competing effects of UV light scattering and oxygen deadzone thickness.
• To achieve high-resolution 3D fabrication of ceramic components with dimensional accuracy.

Main Methods:

• Experimental characterization of UV light scattering and oxygen deadzone thickness in microCLIP.
• Development of a systematic framework to optimize UV power and stage speed.
• Validation of the optimization method through fabricating a gradient index Luneburg lens.

Main Results:

• Identified optimal process parameters (UV power, stage speed) for high-resolution ceramic 3D printing.
• Demonstrated control over feature dimensions and curing depth despite ceramic particle scattering.
• Successfully fabricated a complex Luneburg lens with 100 μm strut width and 60 μm layer thickness.

Conclusions:

• The developed optimization framework effectively manages microCLIP process variations caused by ceramic inks.
• This approach enables precise, high-resolution 3D printing of advanced ceramic materials.
• Optimized microCLIP is a viable method for fabricating intricate ceramic structures for various applications.