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. 2015 Jul 6;112(29):8971–8976. doi: 10.1073/pnas.1502870112

Fig. S7.

Fig. S7.

(A) Optical (Inset) and SEM images of a CNT film made of network of CNTs. (B) Lack of inter-CNT hydrogen bonds, the CNT film has a much lower tensile strength and toughness than the cellulose nanopaper, although the constituent CNT bundles and CNF fibers have comparable diameter (11 nm).