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. 2018 Mar 13;8:4410. doi: 10.1038/s41598-018-22200-4

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© The Author(s) 2018

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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Mechanical properties with different solvents. (a) Photograph of a perforated nanomembrane suspended over the opening of a 9.4 mm diameter plastic tube used for bulging experiments. The nanomembrane is only visible due to reflection. Scale bar: 1 cm. (b) Stress - strain correlations of perforated and dense nanomembranes of identical matrix composition determined in aqueous environment. Material parameters extracted from the correlation are indicated. Dashed lines are a guide to the eye. (c) Stress - strain plots of perforated nanomembranes determined with the indicated organic solvent. Water was used for the nanomembranes incubated with 1 M NaOH beforehand.