Academic Journal
“Invisible” Digital Light Processing 3D Printing with Near Infrared Light
| العنوان: | “Invisible” Digital Light Processing 3D Printing with Near Infrared Light |
|---|---|
| المؤلفون: | Lynn M. Stevens (9262782), Clotilde Tagnon (12003478), Zachariah A. Page (2561827) |
| سنة النشر: | 2022 |
| المجموعة: | Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: | Biophysics, Physiology, Pharmacology, Biotechnology, Marine Biology, Inorganic Chemistry, Mental Health, Environmental Sciences not elsewhere classified, “ invisible ”, solidification upon exposure, recently extended printability, occurs upon exposure, induced solidification processes, deficient redox pairs, day standard used, 3d print structures, based 3d printers, speed (< 60, driven 3d printing, based photocuring technology, traditional uv light, composite 3d printing, near infrared light, 3d printing, uv light, structures produced, rapid photocuring, printing parameters, red light, light increases |
| الوصف: | The ability to 3D print structures with low-intensity, long-wavelength light will broaden the materials scope to facilitate inclusion of biological components and nanoparticles. Current materials limitations arise from the pervasive absorption, scattering, and/or degradation that occurs upon exposure to high-intensity, short-wavelength (ultraviolet) light, which is the present-day standard used in light-based 3D printers. State-of-the-art techniques have recently extended printability to orange/red light. However, as the wavelength of light increases, so do the inherent challenges to match the speed and resolution of traditional UV light-induced solidification processes (i.e., photocuring). Herein, a photosystem is demonstrated to enable low-intensity (<5 mW/cm 2 ), long-wavelength (∼850 nm) near-infrared (NIR) light-driven 3D printing, “invisible” to the human eye. The combination of a NIR absorbing cyanine dye with electron-rich and -deficient redox pairs was required for rapid photocuring in a catalytic manner. The rate of polymerization and time to solidification upon exposure to NIR light were characterized via in situ spectroscopic and rheological monitoring. Translation to NIR digital light processing (projection-based) 3D printing was accomplished through rigorous optimization of resin composition and printing parameters to balance the speed (<60 s/layer) and resolution (<300 μm features). As a proof-of-concept, composite 3D printing with nanoparticle-infused resins was accomplished. Preliminary analysis showed improved feature fidelity for structures produced with NIR relative to UV light. The present report provides key insight that will inform next-generation light-based photocuring technology, such as wavelength-selective multimaterial 3D bio- and composite-printing. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/_Invisible_Digital_Light_Processing_3D_Printing_with_Near_Infrared_Light/19071775 |
| DOI: | 10.1021/acsami.1c22046.s001 |
| الاتاحة: | https://doi.org/10.1021/acsami.1c22046.s001 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.970082D |
| قاعدة البيانات: | BASE |
كن أول من يترك تعليقا!