nanotube

Roll up animation

You can select from the listed chiral indices. This small animation then cuts the unit cell from a graphene sheet and rolls it up in a smooth way. This is of course not the reallstic way of preparing nanotubes, it is just for fun.

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Nanobamboo

By annealing peapods the fullerenes within the host nanotube slowly coalesce and transform into an inner nanotube. The formation of the inner tubes has been confirmed by Raman spectroscopy. However, there is a major difference between such peapod-grown DWCNTs and other (e.g. CVD grown) DWCNTs.

From 0D to 1D

Carbon nanotubes are often demonstrated as rolled-up graphene. However one can get to the concept of carbon nanotubes starting out of fullerenes too. The animation below shows that taking longer and longer fullerenes can result — at least theoretically — in a capped (5,5) armchair nanotube.

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nanotube

Chirality-map

Small diameter tubes with the typical diameter ranges of various production methods.

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From 2D to 1D

Carbon nanotubes can be considered as rolled up graphene. The animations below are illustrating this via two examples.

Copyright note: These animations are the work of Dr. Shigeo Maruyama, and can also be found at his homepage located here

Carbon nanotubes

Carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 28,000,000:1, which is significantly larger than any other material. These cylindrical carbon molecules have novel properties that make them potentially useful in many applications in nanotechnology, electronics, optics and other fields of materials science, as well as potential uses in architectural fields. They exhibit extraordinary strength and unique electrical properties, and are efficient thermal conductors.

Kenji Hata et al., Science 306 (2004) pp.1362
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