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[(a) and (b)] Macrographs of the VACNTs and the CNT film. [(c) and (d)] SEM micrographs of 10-nm-CNT and 30-nm-CNT films.
Displacement field of 10-nm-CNTs film (a) calculated zone. [(b) and (c)] the incremental displacement fields in the Y- and X-directions loading from 2.7 to 3.5 MPa. [(d) and (e)] those from 8.8 to 9.7 MPa.
The results of tensile fracture experiments: (a) the relationship between the length and the width of CNT films. (b) The relationship between the Poisson’s ratio and the strain of CNT films.
Deformation mechanisms: [(a) and (b)] deformation mechanisms of CNTs film for negative and positive Poisson’s ratios. [(c) and (d)] The evolutions of the basic unit structure for negative and positive Poisson’s ratios.
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