Advanced Materials Technologies· 2026Q1
Red‐Light Tomographic Volumetric 3D Printing in Seconds for Fabrication of Colorless Structures
- 1citations
- Q1SCImago
- 2026year
Short summary
A new red-light tomographic volumetric 3D printing system fabricates colorless hydrogel structures in under 30 seconds using methylene blue and triethanolamine as a photoinitiating system.
AI-generated from the title and abstract; the full text is not read.
Key points
- Developed a custom red-light tomographic volumetric additive manufacturing system.
- Utilized methylene blue and triethanolamine as a sacrificial type II photoinitiator for PEGDA hydrogel printing.
- Achieved 3D printing of hydrogel structures in under 30 seconds.
- Produced colorless, extractable hydrogel constructs with fully formed internal channels.
AI-generated from the title and abstract; the full text is not read.
Abstract
ABSTRACT Non‐pulsed red light photopolymerization is attractive for volumetric additive manufacturing because longer wavelengths can improve light penetration, lower scattering, and reduce photodamage compared with ultraviolet (UV) or blue irradiation. In this work, we utilized methylene blue and triethanolamine as a sacrificial type II photoinitiating system for poly(ethylene glycol) diacrylate (PEGDA) hydrogel printing with a custom‐made red‐light tomographic volumetric additive manufacturing system. With the optimized formulation, PEGDA hydrogel structures were printed by red light within 30 s. The resulting constructs were colorless, extractable, and contained fully formed internal channels. This work establishes a type II photochemistry system as a promising route for extending tomographic volumetric 3D printing toward lower‐energy visible‐light irradiation and rapid fabrication of colorless hydrogel constructs.
The authors' abstract, as published at the source. Advanced Materials Technologies, 2026 · DOI ↗
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Field: Organic Chemistry
Organic ChemistryChemistry