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 ?
IBM's new contact approach overcomes the other major hurdle in incorporating carbon nanotubes into semiconductor devices, which could result in smaller chips with greater performance and lower power consumption.
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.
Utilising the concept of the biologically effective dose to define the particle and fibre hazards of carbon nanotubes
This 'end-bonded contact scheme' allows the contacts to be shrunken down to below 10 nanometers without deteriorating performance of the carbon nanotube devices.
The results show that long, thin multi-walled carbon nanotubes that look like asbestos fibers, behave like asbestos fibers.
com/research/30c30f/global_carbon_nano) has announced the addition of the "Global Carbon Nanotube Market 2010-2014" report to their offering.
Some of the key vendors of the carbon nanotubes are CNano technology, Nanocyl, Showa Denko, Arkema, Bayer material science, carbon solutions, carbon NT&F, catalyx nanotech, CNT.
Their discoveries contradict what was previously believed, that carbon nanotubes are not broken down in the body or in nature.
Kagan and his colleagues reported in 2003 that single-walled carbon nanotubes riddled with iron impurities are more toxic to cultured cells than purified nanotubes are.
This license with BMS will further leverage Hyperion's broad patent portfolio and capitalize on the ever increasing demand for carbon nanotubes.
Summary: TEHRAN (FNA)- The researchers at Lorestan University, Iran, achieved new hybrid nanomaterials containing metallic nanoparticles stabilized on carbon nanotubes.
In an upcoming Nature Materials, researchers describe another way to smother plastic's fiery potential: Include a network of carbon nanotubes.