Xolography for linear volumetric 3D printing.

Area of Science:

• Additive Manufacturing
• Photopolymerization
• 3D Printing

Background:

• Additive manufacturing applications are rapidly expanding across diverse fields like aerospace, medical devices, and consumer goods.
• Current light-induced 3D printing methods, while precise, often rely on sequential pointwise or layered fabrication.
• Volumetric 3D printing represents an advancement over sequential methods, enabling faster fabrication of entire objects simultaneously.

Purpose of the Study:

• To introduce xolography, a novel dual-color volumetric 3D printing technique.
• To demonstrate the capability of xolography for fabricating complex 3D objects with functional properties.
• To compare the performance of xolography against existing state-of-the-art volumetric printing methods.

Main Methods:

• Development of a dual-color volumetric 3D printer utilizing photoswitchable photoinitiators.
• Employing intersecting light beams of different wavelengths for localized polymerization within a monomer volume.
• Characterization of fabricated objects for structural complexity, mechanical, and optical functions.

Main Results:

• Xolography achieves resolutions approximately ten times higher than computed axial lithography.
• The technique demonstrates volume generation rates four to five orders of magnitude greater than two-photon photopolymerization.
• Successful fabrication of 3D objects with intricate structures and integrated functions was achieved.

Conclusions:

• Xolography offers a transformative approach to rapid volumetric 3D printing.
• The technology enables efficient production of objects across nanoscopic to macroscopic scales.
• This advancement is poised to significantly impact various industries requiring high-speed, high-resolution additive manufacturing.