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. 2020 Jul 24;11:3732. doi: 10.1038/s41467-020-17533-6

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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. 3 — a Photographs of an SiO₂ sponge before compression, during compression, and after release. b Photographs of an SAC sponge before compression, during compression, and after release. c Photographs showing the flexibility of the SAC sponges. The schematics in the top right corner of the photographs are used to show the folding and unfolding of the samples. Scale bar in c, 5 cm. Atomistic models of d SiO₂ fiber and e SAC fiber. f Stress–strain curves from the molecular dynamics simulations of the SiO₂ fibers and SAC fibers under uniaxial tension.