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. 2015 Jul 2;5:11807. doi: 10.1038/srep11807

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ESEM images of the cross-section of the multilayer GO membrane at (a) 30, (b) 40, (c) 50, (d) 60, (e) 70, and (f) 90 % RH. Schematic images of few-layer GO under (g) dry and (h) humidified conditions.