carbon nanotubes


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carbon nanotubes

[‚kär·bən ′nan·ō‚tübz]
(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 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.
References in periodicals archive ?
Carbon nanotubes are a type of nanotechnology material in which carbon atoms are formed into a cylinder with a diameter of a few nanometers.
The challenge we faced was to create something useful with the carbon nanotubes without losing any of their unique properties or disturbing the alignment.
Carbon nanotubes (CNTs) have been attracted huge attention over the past two decades, based on their extraordinary physical and chemical properties that are a result of their intrinsic nano-sized one-dimensional nature.
In this study, iron-nickel catalyst on aluminium oxide support, have been prepared as [3,17] catalysts for the synthesis of Multi-Walled carbon nanotubes (MWCNT) with ethyne (acetylene) as carbon source.
KetaSpire PEEK compounded with carbon nanotubes by Entegris is also being used by Quantum Polymers in the USA to extrude rod and plate.
Svensson said: "I don't believe that it will be cheaper to build transistors from another material than silicon, but carbon nanotubes can be used to produce smaller and faster components.
Its expertise in tuning the carbon nanotubes properties and morphologies to obtain the best out of their intrinsic potential has made Nanocyl one of the most recognized producers of specialty carbon nanotubes and of materials and technologies using carbon nanotubes.
Kim and his colleagues set out to see whether the decayed plant and animal material found in waterways would affect carbon nanotubes.
AIST has encapsulated beta-carotene in HiPco single-walled carbon nanotubes (SWCNTs), a type of carbon nanotube currently marketed by Carbon Nanotechnologies Inc.
They're the perfect replacement: small, strong, and carbon-based," relates Haddon, lead author of the paper, "A Bone Mimic Based on the Self-Assembly of Hydroxyapatite on Chemically Functionalized Single-Walled Carbon Nanotubes.
According to CNI, the technology gives the company a patent on a composition that is single-wall carbon nanotubes with a nanometer-scale coating of another material that can include polymers and metals.
Carbon nanotubes are tube-shaped molecules that are 50,000 times thinner than the average human hair.