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Matthew R. Maschmann, Gregory J. Ehlert, Sei Jin Park, David Mollenhauer, Benji Maruyama, A. John Hart and Jeffery W. Baur Visualizing Strain Evolution and Coordinated Buckling within CNT Arrays by In Situ Digital Image Correlation Advanced Functional Materials 22

Version of Record online: 20 JUL 2012 | DOI: 10.1002/adfm.201200676

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Spatial mapping of deformation fields within CNT array columns is achieved using digital image correlation of in situ scanning electron microscopy (SEM) compression sequences. Strain is highly non-uniform, with buckle formation occurring in localized regions of enhanced strain. A local buckling criterion of 5% principal strain is observed for all columns despite systematic column deformation variation as a function of aspect ratio.

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