| LC control no. | sh2013002061 |
|---|---|
| Topical heading | Carbon nanotubes |
| Variant(s) | CNTs (Carbon nanotubes) |
| See also | Nanotubes |
| Found in | Work cat: Carbon nanotubes : properties and applications, 2006. Science (New York, N.Y.), Feb. 1, 2013: p. 535 (Carbon nanotubes (CNTs) are seamless cylinders of one or more layers of graphene (denoted single-wall, SWNT, or multiwall, MWNT), with open or closed ends. Perfect CNTs have all carbons bonded in a hexagonal lattice except at their ends, whereas defects in mass-produced CNTs introduce pentagons, heptagons, and other imperfections in the sidewalls that generally degrade desired properties. Diameters of SWNTs and MWNTs are typically 0.8 to 2 nm and 5 to 20 nm, respectively, although MWNT diameters can exceed 100 nm. CNT lengths range from less than 100 nm to several centimeters, thereby bridging molecular and macroscopic scales. ... Most CNT production today is used in bulk composite materials and thin films, which rely on unorganized CNT architectures having limited properties) Carbon (New York, N.Y.), July 1995: p. 883 (Carbon nanotube research was greatly stimulated by the initial report of observation of carbon tubules of nanometer dimensions and the subsequent report on the observation of conditions for the synthesis of large quantities of nanotubes. Since these early reports, much work has been done, and the results show basically that carbon nanotubes behave like rolled-up cylinders of graphene sheets of sp[superscript 2] bonded carbon atoms, except that the tubule diameters in some cases are small enough to exhibit the effects of one-dimensional (1D) periodicity) McGraw-Hill dictionary of scientific and technical terms, 2003: (carbon nanotubes -- [chemistry] -- Cylindrical molecules (sealed at both ends with a convex arrangement of atoms) composed of carbon with a diameter of around 1 nanometer and lengths of up to a few micrometers. Single-walled nanotubes may be conducting or semiconducting, depending on the diameter and chirality of the tube. Multiwall nanotubes containing coaxial shells of the elemental single-wall nanotubes are also possible) Dekker encyclopedia of nanoscience and nanotechnology, 2009: v. 3, p. 2140 (Carbon nanontubes (CNTs) ... A CNT can be geometrically thought of as a graphite sheet rolled into a seamless cylinder) |
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