Temperature high, single walled carbon

Hur, S. H. Park, O. O. Rogers, J. A. 2005. Extreme bendability of single-walled carbon nanotube networks transferred from high-temperature growth substrates to plastic and their use in thin-film transistors. Appl. Phys. Lett. 86 243502. 

We have analyzed the influence of the annealing temperature, structural disorder, and the frequency of a continuous excitation laser radiation Vl on the first- and the second-order Raman spectra of several nanostructured carbon materials including single-wall carbon nanotubes (SWCNT), SWCNT-polymer composites, and nanostructured single-crystalline graphites. Consideration of the high-order nonlinear effects in Raman spectra and anharmonicity of characteristic Raman bands (such as G, G, and D modes) provides important information on the vibration modes and collective (phonon-like) excitations in such ID or 2D confined systems... 

Chiashi S, Murakami Y, Miyauchi Y, Maruyama S (2008) Temperature dependence of Raman scattering from single-walled carbon nanotubes undefined radial breathing mode peaks at high temperatures. Jpn J Appl Phys 47 2010... 

Collins, P.G., Bradley, K., Ishigami, M., and Zettl, A. (2000). Extreme oxygen sensitivity of electronic properties of carbon nanotubes. Science, 287, 1801—4. Ohba, T., Omori, T., Kanoh, H., et al. (2004). Intentitial nanopore change of single wall carbon nanohom assembUes with high temperature treatment. Chem. Phys. Lett., 389, 332-6. 

High-field transport properties of single wall carbon nanotubes (SWCNT) are analyzed on the basis of phonon-assisted tunneling (PhAT) model. This model enables to explain not only temperature-dependent current-voltage characteristics of SWCNT, but also the crossover from a semiconducting-like temperature dependence conductivity to a metallic-like one as temperature is increased. 

Nanofillers have superb thermal and electrical properties. All nanotubes are expected to be very good thermal conductors along the tube axis, exhibiting a property known as ballistic conduction, but good insulators laterally to the tube axis. It has been reported that single-wall carbon nanotubes exhibit thermal conductivity (TC) values as high as 2000-6000 W mK [4] under ideal circumstances. The temperature stability of carbon nanotubes is estimated to be up to 2800 °C in a vacuum, and about 750 °C in air. By comparison, metals have TC values of several hundred W mK , and water and oil have TC values of only 0.6 W mK and 0.2 W mK respectively. Table 19.1 lists the thermal conductivities of various materials, including nanofillers (nanotubes), metals, and oils. 

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