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Multi-color dual wavelength vat photopolymerization 3D printing via spatially controlled acidity

Engineering and Technology

Multi-color dual wavelength vat photopolymerization 3D printing via spatially controlled acidity

K. C. H. Chin, G. Ovsepyan, et al.

This innovative research conducted by Kyle C. H. Chin, Grant Ovsepyan, and Andrew J. Boydston showcases the revolutionary potential of 3D printing multi-color objects using dual wavelength vat photopolymerization. By harnessing both visible and ultraviolet light, they successfully created vibrant, customizable designs while controlling the color through local acidity. Discover the future of 3D printing with their groundbreaking techniques!

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Playback language: English
Abstract
This work reports the 3D printing of multi-color objects from a single resin vat using dual wavelength vat photopolymerization (DW-VP). This was achieved by concurrently curing resin with visible light and modulating local resin color with 365-nm ultraviolet (UV) light, utilizing a photoacid generator (PAG) and pH-responsive dyes. The color is determined by the local acidity, controlled by UV light dosage and pattern. Multi-color object formation was implemented in both two-step (3DP followed by UV exposure) and single-step DW-VP processes, creating a wide range of colors and patterns.
Publisher
Nature Communications
Published On
May 08, 2024
Authors
Kyle C. H. Chin, Grant Ovsepyan, Andrew J. Boydston
Tags
3D printing
multi-color objects
dual wavelength
vat photopolymerization
photoacid generator
pH-responsive dyes

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