Lattice fringe signatures of epitaxy on nanotubes

Details Lattice fringe signatures of epitaxy on nanotubes Lattice fringe signatures of epitaxy on nanotubes

2006-03-11

arxiv.org/abs/cond-mat/0603312v1

Physics

Condensed Matter

Materials Science

4 pages, 5 figures, 9 refs, cf. http://newton.umsl.edu/~run/nano/epitaxy.html

Scientific paper

10.1017/S1431927606065366

Carbon nanotubes are of potential interest as heterogeneous catalysis supports, in part because they offer a high surface area hexagonal array of carbon atoms for columnar or epitaxial attachment. Fringe visibility modeling of electron microscope lattice images allows one to investigate the relationship between individual nanoparticles and such nanotube supports. We show specifically how (111) columnar or epitaxial growth of FCC metal lattices, on carbon nanotubes viewed side-on, results in well-defined patterns of (111)-fringe orientations with respect to the tube axis. In the epitaxial case, the observations also provide information on chirality of the nanotube's outermost graphene sheet.

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