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. 2022 May 19;19:38. doi: 10.1186/s12989-022-00478-7

Fig. 1.

Fig. 1

Characterization of the test material. A SEM image of Taquann-MWNT-7. B Morphological classification of the individual fibers. The straight fibers account for 98.8% of all examined fibers (left). Representative images of the 3 structures (right), C Length and width distribution of MWNT-7. D DLS analysis. The peak of the hydrodynamic diameter is 669 nm