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Scheme of the indentation and shell buckling.

Scheme of the indentation and shell buckling.

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It is well-known that the nanoindentation hardness displays strong indentation size effects. In this paper, the size dependence of the hardness with respect to the depth and the indenter radius for the buckling of multiwalled carbon nanotubes is investigated using the Toupin-Mindlin strain gradient theory. As expected, the indentation hardness is c...

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We describe the micro-mechanical properties of vertically aligned carbon nanotubes (VACNTs) fabricated using a photolithographically patterned iron catalyst prepared using sol–gel techniques. The carbon nanotubes (CNTs) were grown via chemical vapor deposition. The relative mechanical stiffness of the resultant structure was measured using nanoinde...