By M. Endo, S. Iijima, M.S. Dresselhaus
Carbon nanotubes were studied widely relating to fullerenes, and including fullerenes have opened a brand new technology and know-how box on nano scale fabrics. an entire diversity of concerns from the instruction, constitution, houses and commentary of quantum results in carbon nanotubes compared to 0-D fullerenes are mentioned. moreover, complementary reports on carbon nanoparticles resembling carbon nano-capsules, onion-like graphite debris and metal-coated fullerenes are coated. This ebook goals to hide contemporary learn and improvement during this zone, and so offer a handy reference instrument for all researchers during this box. it's also was hoping that this booklet can serve to stimulate destiny paintings on carbon nanotubes.
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Additional resources for Carbon Nanotubes
W. Mintmire, Phys. Rev B 43, 14281 (June 1991). 25. Kikuo Harigaya, Chem. Phys. Lett. 189, 79 (1992). 26. R. Saito, M. Fujita, G . Dresselhaus, and M. S. Dresselhaus, In Electrical, Optical and Magnetic Properties of Organic Solid State Materials, MRS Symposia Proceedings, Boston. Edited by L. Y. Chiang, A. F. Garito, and D. J. Sandman, vol. 247, p. 333, Pittsburgh, PA, Materials Research Society Press (1992). 27. K. Harigaya and M. Fujita, Phys. Rev. B 47, 16563 (1 993). 28. K. Harigaya and M: Fujita, Synth.
The chiral vector OA or C, = nu, ma, is defined on the honeycomb lattice by unit vectors a , and u2 and the chiral angle 6 is defined with respect to the zigzag axis. Along the zigzag axis 6 = 0”. Also shown are the lattice vector OB = T of the 1D tubule unit cell, and the rotation angle $ and the translation T which constitute the basic symmetry operation R = ($1 7 ) . The diagram is constructed for (n,rn) = (4,2). + the axis of the tubule, and with a variety of hemispherical caps. A representative chiral nanotube is shown in Fig.
We supposed that they were catalytic particles that became inactive after introduction into the tubules during the growth process. On the other hand, the formation of graphite layers around the metal in the case of graphitesupported catalysts can be explained on the basis of models proposed earlier[4,18,22]. The metal outside of the support is saturated by the carbon produced by hydrocarbon decomposition, possibly in the form of “active” carbides. The latter then decomposes on the surface of the metal, producing graphite layers.
Carbon Nanotubes by M. Endo, S. Iijima, M.S. Dresselhaus