Single-wall nanotube thermal conductivity

G. Zhang, B.W. Li, Wall thickness" effects on Raman spectrum shift, thermal conductivity, and Young s modulus of single-walled nanotubes. J. Phys. Chem. B 109(50), 23823-23826 (2005)... 

In Chapter 7, the thermal properties of carbon nanotubes are discussed by M. Osman, A. Srivastava and D. Srivastava. The authors first present the physical structure of nanotubes and their electrical properties. Then, theoretical analytical approaches to thermal conductivity and specific heat calculations are introduced. This is followed by a review of the recent experimental measurement of thermal conductivity of single-wall nanotubes (SWNTs) and multiwall nanotubes. They also present a molecular dynamical simulation approach and its application to the investigation of thermal conductivity of SWNTs, Y-junction nanotubes and heat pulse propagation in SWNTs. 

J. Hone, M. Whitney, C. Piskoti, A. Zettl, Thermal conductivity of single-walled carbon nanotubes, Physical Review B, 59 (1999) R2514-R2516. 

Nanofillers, carbon nanotubes (CNTs), especially single-walled carbon nanotubes (SWNTs), have attracted a great deal of interest due to their low density, large aspect ratio, superior mechanical properties, and unique electrical and thermal conductivities [1-4], They can find potential applications in many fields, such as chemical sensing, gas storage, field emission, scanning microscopy, catalysis, and composite materials. 

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. 

B. Wright, D. Thomas, H. Hong, L. Groven, J. Puszynski, E. Duke, X. Ye, and S. Jin, Magnetic field enhanced thermal conductivity in heat transfer nanofluids containing Ni coated single wall carbon nanotubes, Appl. Phy.s Lett., 91,173116 (2007). 

The effects of nano-structured carbon fillers [fuUerene C60, single wall carbon nanotube (SWCNT), carbon nanohom (CNH), carbon nanoballoon (CNB), and ketjenblack (KB) and conventional carbon fillers [conductive grade and graphi-tized carbon black (CB)]] on conductivity (resistance), thermal properties, crystallization, and proteinase K-catalyzed enzymatic degradation of PLA films were investigated by Tsuji et al. [70]. The researchers found that the addition of 1 wt% SWCNT effectively decreased the resistivity of PLA film compared with that of conventional CB. The crystallization of PLA further decreased the resistivity of films. The addition of carbon fillers, except for C60 and CNB at 5 wt%, lowered the glass transition temperature, whereas the addition of carbon fillers, excluding... 

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