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. 2020 Jul 3;11:3302. doi: 10.1038/s41467-020-17118-3

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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. 4 — a, b SEM images of PAN/CB NFM. c TEM image of PAN/CB nanofiber. d Photographs of folding and twisting tests of PAN/CB NFM. e Raman spectra of PAN/CB and PAN NFMs. f Light absorption of PAN/CB and PAN NFMs. Solar spectral irradiance (yellow shadow) weighted by standard AM1.5 G solar spectrum. g Schematic of the moisture transport and vapor-out processes of biomimetic bilayer PML-PC NFM. h IR thermal images revealing the surface temperature distribution of PAN/MIL@LiCl NFM and bilayer PML-PC NFM under one-sun illumination after a fixed time. i Surface temperature evolution of PAN/MIL@LiCl NFM and bilayer PML-PC NFM versus time under simulated sunlight irradiation of 1 kW m⁻². j Mass change in the PAN/MIL@LiCl NFM and bilayer PML-PC NFM versus irradiation time under one-sun illumination. k Evolution of the water evaporation rate of PAN/MIL@LiCl NFM and bilayer PML-PC NFM as a function of time under a solar irradiation.