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. 2020 Sep 17;11:4685. doi: 10.1038/s41467-020-18518-1

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a Scheme of the curing of a single droplet into the desired 3D structure. b–e Sequences of optical images of the UV curing-induced TCL receding process for the formation of designed 3D structures from a single droplet. With the continuous projection of the UV illumination pattern and the elevation of the supporting plate, the liquid resin is successively cured into solid structures at the curing interface. Simultaneously, the TCL of the resin droplet recedes with the consumption of the liquid resin. Finally, the liquid droplet is cured into a desired 3D structure.