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3D printing of multi-scalable structures via high penetration near-infrared photopolymerization.

ABSTRACT: 3D printing consisted of in-situ UV-curing module can build complex 3D structures, in which direct ink writing can handle versatile materials. However, UV-based direct ink writing (DIW) is facing a trade-off between required curing intensity and effectiveness range, and it cannot implement multiscale parallelization at ease. We overcome these difficulties by ink design and introducing near-infrared (NIR) laser assisted module, and this increases the scalability of direct ink writing to solidify the deposited filament with diameter up to 4 mm, which is much beyond any of existing UV-assisted DIW. The NIR effectiveness range can expand to tens of centimeters and deliver the embedded writing capability. We also demonstrate its parallel manufacturing capability for simultaneous curing of multi-color filaments and freestanding objects. The strategy owns further advantages to be integrated with other types of ink-based 3D printing technologies for extensive applications.

SUBMITTER: Zhu J

PROVIDER: S-EPMC7351743 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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3D printing of multi-scalable structures via high penetration near-infrared photopolymerization.

Zhu Junzhe J Zhang Qiang Q Yang Tianqing T Liu Yu Y Liu Ren R

Nature communications 20200710 1

3D printing consisted of in-situ UV-curing module can build complex 3D structures, in which direct ink writing can handle versatile materials. However, UV-based direct ink writing (DIW) is facing a trade-off between required curing intensity and effectiveness range, and it cannot implement multiscale parallelization at ease. We overcome these difficulties by ink design and introducing near-infrared (NIR) laser assisted module, and this increases the scalability of direct ink writing to solidify ...[more]

PMID: 32651379

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