Journal ArticleDOI
Helical microtubules of graphitic carbon
TLDR
Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.Abstract:
THE synthesis of molecular carbon structures in the form of C60 and other fullerenes1 has stimulated intense interest in the structures accessible to graphitic carbon sheets. Here I report the preparation of a new type of finite carbon structure consisting of needle-like tubes. Produced using an arc-discharge evaporation method similar to that used for fullerene synthesis, the needles grow at the negative end of the electrode used for the arc discharge. Electron microscopy reveals that each needle comprises coaxial tubes of graphitic sheets, ranging in number from 2 up to about 50. On each tube the carbon-atom hexagons are arranged in a helical fashion about the needle axis. The helical pitch varies from needle to needle and from tube to tube within a single needle. It appears that this helical structure may aid the growth process. The formation of these needles, ranging from a few to a few tens of nanometres in diameter, suggests that engineering of carbon structures should be possible on scales considerably greater than those relevant to the fullerenes. On 7 November 1991, Sumio Iijima announced in Nature the preparation of nanometre-size, needle-like tubes of carbon — now familiar as 'nanotubes'. Used in microelectronic circuitry and microscopy, and as a tool to test quantum mechanics and model biological systems, nanotubes seem to have unlimited potential.read more
Citations
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Journal ArticleDOI
Growth and sintering of fullerene nanotubes.
Daniel T. Colbert,Jinshui Zhang,S. M. McClure,Pavel Nikolaev,Z. Chen,Jason H. Hafner,D. W. Owens,Paul G. Kotula,C. B. Carter,J. H. Weaver,Andrew G. Rinzler,Richard E. Smalley +11 more
TL;DR: A detailed mechanism that features the high electric field at (and field-emission from) open nanotube tips exposed to the arc plasma, and consequent positive feedback effects from the neutral gas and plasma, is proposed for tube growth in such arcs.
Journal ArticleDOI
Enhanced saturation lithium composition in ball-milled single-walled carbon nanotubes
B. Gao,Christopher A. Bower,J. D. Lorentzen,L. Fleming,Alfred Kleinhammes,X.-P. Tang,Laurie E. McNeil,Yue Wu,Otto Zhou +8 more
TL;DR: In this paper, the effects of processing on the structure and morphology of single-walled carbon nanotubes (SWNT) and their electrochemical intercalation with lithium were investigated.
Journal ArticleDOI
Nanostructured materials for electrochemiluminescence (ECL)-based detection methods: Recent advances and future perspectives
TL;DR: This review presents a general picture of the last advances and developments related to novel nanostructured materials for electrochemiluminescence-based biosensors using carbon nanotubes, metal nanoparticles, quantum dots, thin films of metallopolymers and of inorganic metal complexes.
Journal ArticleDOI
Purification and size‐selection of carbon nanotubes
Jean-Marc Bonard,Thierry Stora,Jean-Paul Salvetat,Frédéric Maier,Thomas Stöckli,Claus Duschl,László Forró,Walt A. de Heer,A. Châtelain +8 more
TL;DR: In this paper, a non-destructive method for the separation and size selection of carbon nanotubes and nanoparticles produced by arc discharge is presented, which can achieve yields as high as 90 % in weight without any damage to tube tips or tube walls following the separation process.
Journal ArticleDOI
Synthesis and characterization of faceted hexagonal aluminum nitride nanotubes.
TL;DR: The synthesis of the faceted single-crystalline h-AlN nanotubes with the length of a few micrometers and diameters from 30 to 80 nm provides an ideal substrate for the construction of GaN-based nanoheterostructures in future nanoelectronics.
References
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Journal ArticleDOI
C 60 : Buckminsterfullerene
Harold W. Kroto,Harold W. Kroto,James R. Heath,Sean C. O'Brien,Robert F. Curl,Richard E. Smalley +5 more
TL;DR: In this article, the authors proposed a truncated icosahedron, a polygon with 60 vertices and 32 faces, 12 of which are pentagonal and 20 hexagonal.
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Solid C60: a new form of carbon
TL;DR: In this article, a new form of pure, solid carbon has been synthesized consisting of a somewhat disordered hexagonal close packing of soccer-ball-shaped C60 molecules.
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Filamentous growth of carbon through benzene decomposition
TL;DR: Carbon fibres have been prepared by pyrolysing a mixture of benzene and hydrogen at about 1100°C and have been studied by high resolution electron microscopy.
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Cohesive mechanism and energy bands of solid C60.
Susumu Saito,Atsushi Oshiyama +1 more
TL;DR: In this paper, the authors present microscopic total energy calculations which provide a cohesive property and electronic structures of a new form of solid carbon, the face-centered-cubic crystal (fcc ${\mathrm{C}}_{60}$).
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Growth, Structure, and Properties of Graphite Whiskers
TL;DR: Graphite whiskers have been grown in a dc arc under a pressure of 92 atmospheres of argon and at 3900°K as discussed by the authors, with recoverable lengths up to 3 cm. They are embedded in a solid matrix of graphite which builds up by diffusion of carbon vapor from the positive to the negative electrode.