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Rapid digital light 3D printing enabled by a soft and deformable hydrogel separation interface

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  • Jingjun Wu

    (Ningbo Research Institute Zhejiang University
    Zhejiang University)

  • Jing Guo

    (Zhejiang University
    ZJU-Hangzhou Global Scientific and Technological Innovation Center)

  • Changhong Linghu

    (Zhejiang University)

  • Yahui Lu

    (Zhejiang University)

  • Jizhou Song

    (Zhejiang University)

  • Tao Xie

    (Ningbo Research Institute Zhejiang University
    Zhejiang University
    ZJU-Hangzhou Global Scientific and Technological Innovation Center)

  • Qian Zhao

    (Ningbo Research Institute Zhejiang University
    Zhejiang University
    ZJU-Hangzhou Global Scientific and Technological Innovation Center)

Abstract

The low productivity of typical 3D printing is a major hurdle for its utilization in large-scale manufacturing. Innovative techniques have been developed to break the limitation of printing speed, however, sophisticated facilities or costly consumables are required, which still substantially restricts the economic efficiency. Here we report that a common stereolithographic 3D printing facility can achieve a very high printing speed (400 mm/h) using a green and inexpensive hydrogel as a separation interface against the cured part. In sharp contrast to other techniques, the unique separation mechanism relies on the large recoverable deformation along the thickness direction of the hydrogel interface during the layer-wise printing. The hydrogel needs to be extraordinarily soft and unusually thick to remarkably reduce the adhesion force which is a key factor for achieving rapid 3D printing. This technique shows excellent printing stability even for fabricating large continuous solid structures, which is extremely challenging for other rapid 3D printing techniques. The printing process is highly robust for fabricating diversified materials with various functions. With the advantages mentioned above, the presented technique is believed to make a large impact on large-scale manufacturing.

Suggested Citation

  • Jingjun Wu & Jing Guo & Changhong Linghu & Yahui Lu & Jizhou Song & Tao Xie & Qian Zhao, 2021. "Rapid digital light 3D printing enabled by a soft and deformable hydrogel separation interface," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26386-6
    DOI: 10.1038/s41467-021-26386-6
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    References listed on IDEAS

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    1. Mutian Hua & Shuwang Wu & Yanfei Ma & Yusen Zhao & Zilin Chen & Imri Frenkel & Joseph Strzalka & Hua Zhou & Xinyuan Zhu & Ximin He, 2021. "Strong tough hydrogels via the synergy of freeze-casting and salting out," Nature, Nature, vol. 590(7847), pages 594-599, February.
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    Cited by:

    1. Qingrui Wang & Xiaoyong Tian & Daokang Zhang & Yanli Zhou & Wanquan Yan & Dichen Li, 2023. "Programmable spatial deformation by controllable off-center freestanding 4D printing of continuous fiber reinforced liquid crystal elastomer composites," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Zizheng Fang & Yunpeng Shi & Hongfeng Mu & Runzhi Lu & Jingjun Wu & Tao Xie, 2023. "3D printing of dynamic covalent polymer network with on-demand geometric and mechanical reprogrammability," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Hailei Zhang & Boyan Tang & Bo Zhang & Kai Huang & Shanshan Li & Yuangong Zhang & Haisong Zhang & Libin Bai & Yonggang Wu & Yongqiang Cheng & Yanmin Yang & Gang Han, 2024. "X-ray-activated polymerization expanding the frontiers of deep-tissue hydrogel formation," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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