3D Printing In article number 2311917 by Hyun-Jong Paik, Wonjoo Lee, Min Sang Kwon, Dowon Ahn, and co-workers, panchromatic photopolymer resins, selectively reacting to two colors of lights, are developed and applied to realize photoactive 3D printing. Longer-wavelength of light (red light, ≈620 nm) irradiation initiates rapid photopolymerization and 3D printing, resulting in remarkable build speed and feature resolution. Incorporating violet/blue-light-sensitive moieties (≈405–450 nm), such as hexaarylbiimidazoles, enable independent spatiotemporal degradation/erasing.
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Shin et al. (2024) studied this question.
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