From Single to Multi-Material 3D Printing of Glass-Ceramics for Micro-Optics

Area of Science:

• Materials Science
• Optics
• Nanotechnology

Background:

• Feynman's vision of atomic-scale machines is realized through 3D volumetric patterning.
• High-refractive-index, resilient materials are crucial for advanced light-driven technologies.
• Creating micro-optical architectures with dissimilar glass and ceramic materials is the next frontier.

Purpose of the Study:

• To review advancements in single and multi-material two-photon lithography (TPL) for micro-optics.
• To discuss photoresin customization, process conditions, and characterization for TPL.
• To outline a roadmap for bridging research and industry in micro-optics fabrication.

Main Methods:

• Utilizing fluid handling systems integrated with two-photon lithography (TPL).
• Examining single and multi-material TPL processes for fabricating micro-optical architectures.
• Focusing on photoresin customization and controlling physico-chemical conditions.

Main Results:

• TPL enables the creation of complex, spatially patterned micro-optical architectures.
• Multi-material integration within architectures pushes optical performance boundaries.
• Cross-scale characterization is essential for assessing optical quality and addressing fabrication challenges.

Conclusions:

• Spatially patterned multi-material micro-optics fabricated via TPL offer novel light-shaping capabilities.
• Advancements in TPL are crucial for realizing the potential of micro-optics.
• Collaboration between research and industry is key to advancing micro-optics technology.