Crystalline Ropes of Metallic Carbon Nanotubes

  title={Crystalline Ropes of Metallic Carbon Nanotubes},
  author={Andr{\'e} Thess and Roland Lee and Pavel Nikolaev and Hongjie Dai and Pi{\`e}rre Petit and J{\'e}r{\^o}me Robert and Chunhui Xu and Young Hee Lee and Seong Gon Kim and Andrew G. Rinzler and Daniel T. Colbert and Gustavo E. Scuseria and David Tom{\'a}nek and John E. Fischer and Richard E. Smalley},
  pages={483 - 487}
Fullerene single-wall nanotubes (SWNTs) were produced in yields of more than 70 percent by condensation of a laser-vaporized carbon-nickel-cobalt mixture at 1200°C. X-ray diffraction and electron microscopy showed that these SWNTs are nearly uniform in diameter and that they self-organize into “ropes,” which consist of 100 to 500 SWNTs in a two-dimensional triangular lattice with a lattice constant of 17 angstroms. The x-ray form factor is consistent with that of uniformly charged cylinders 13… 
Conductivity enhancement in single-walled carbon nanotube bundles doped with K and Br
Single-walled carbon nanotubes (SWNTs), prepared by metal-catalysed laser ablation of graphite, form close-packed bundles or ‘ropes;. These rope crystallites exhibit metallic behaviour above 50K
Growth of single-wall carbon nanotubes within an ordered array of nanosize silica spheres
Single-wall carbon nanotubes (SWCNTs), which were well-separated individuals or, small bundles of two to five tubes, were produced in a controllable manner by disproportionation of CO at 700 °C and 1
Carbon single wall nanotubes elaboration and properties
Co-evaporation of carbon, in the presence of helium with some other element as catalyst, yields interesting new molecules of the fullerene family which have tubular morphologies with a cross-section
Carbon and metals: a path to single-wall carbon nanotubes
Abstract Adding metals to carbon vapor leads to the formation of a rich variety of molecular structures. Examples include endohedral fullerenes, metallocarbohedrenes, metal–carbide nanocrystallites
Characteristics and Applications of Carbon Nanotubes with Different Numbers of Walls
Abstract Carbon nanotubes (CNTs) are quasi-one-dimensional (1D) tubular forms of sp2 carbon networks. They may contain one to several tens of concentric graphitic shells and are typically 1–50 nm in
Controlled production of aligned-nanotube bundles
Carbon nanotubes might be usefully employed in nanometre-scale engineering and electronics. Electrical conductivity measurements on the bulk material, on individual multi-walled and single-walled
Mono-dispersed single-wall carbon nanotubes formed in channels of zeolite crystal: Production, optical and electrical transport properties
Carbon nanotube materials can now be produced in macroscopic quantities. However, the raw material has a disordered structure and unsorted size, which restrict investigations of both the properties
Large scale synthesis of single-wall carbon nanotubes by arc-discharge method
Abstract Using a graphite rod with a hole filled with the powder of a mixture of Y–Ni alloy and graphite or calcium carbide and nickel as anode, single-wall carbon nanotubes (SWCNTs) with high yield
Microscopic mechanisms for the catalyst assisted growth of single-wall carbon nanotubes
Whatever the synthesis technique used, the growth of ropes of single-wall carbon nanotubes requires the assistance of a metallic catalyst. In this paper, the role played by the catalyst is studied
High pressure behavior of single-walled carbon nanotubes and polymerized fullerenes
Abstract In situ synchrotron X-ray diffraction measurements of single-walled carbon nanotube (SWNT) bundles and two types of pressure-polymerized fullerenes under high pressure were carried out. It


Cobalt-catalysed growth of carbon nanotubes with single-atomic-layer walls
CARBON exhibits a unique ability to form a wide range of structures. In an inert atmosphere it condenses to form hollow, spheroidal fullerenes1–4. Carbon deposited on the hot tip of the cathode of
Helical microtubules of graphitic carbon
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
Growth morphologies during cobalt-catalyzed single-shell carbon nanotube synthesis
Abstract We report interesting growth morphologies produced during the electric arc-discharge between a graphite cathode and a composite cobalt—graphite anode, which includes the abundant formation
Single-shell carbon nanotubes of 1-nm diameter
CARBON nanotubes1 are expected to have a wide variety of interesting properties. Capillarity in open tubes has already been demonstrated2–5, while predictions regarding their electronic structure6–8
Defects in Carbon Nanostructures
The structures of the carbon nanotubes and particles were characterized here by bulk physical and chemical property measurements and indicate that they are highly defective and have a local structure similar to turbostratic graphite.
Structural properties of a carbon-nanotube crystal.
  • Tersoff, Ruoff
  • Materials Science, Medicine
    Physical review letters
  • 1994
The ordered condensed phase of carbon nanotubes is examined, finding that as the tube diameter varies, the structural properties show a clear transition between two regimes with qualitatively different behavior.
Catalytic growth of single-walled manotubes by laser vaporization
Direct laser vaporization of transition-metal/graphite composite rods produced single-walled carbon nanotubes (SWT) in the condensing vapor in a heated flow tube. A much higher yield of nanotubes was
First-Principles Study of Carbon Nanotube Solid-State Packings
In the framework of the density functional theory, we study the energetics and geometry of three-dimensional solids made of single-shell carbon nanotubes. Amongst the investigated forms, a hexagonal
Unraveling Nanotubes: Field Emission from an Atomic Wire
Field emission of electrons from individually mounted carbon nanotubes has been found to be dramatically enhanced when the nanotube tips are opened by laser evaporation or oxidative etching, in a process that resembles unraveling the sleeve of a sweater.
X-ray powder diffraction from carbon nanotubes and nanoparticles.
Detailed x-ray powder-diffraction measurements on a sample consisting of carbon nanotubes and nanoparticles demonstrate the existence of short-range interlayer stacking correlations, and calculations show that such correlations should not be observable in idealized models of nanot tubes.