Session W25: Nanowires IV: Nitrides and Others
2:30 PM–5:06 PM, Thursday, March 24, 2005
LACC Room: 501A
Sponsoring Units:
DCOMP DMP
Chair: Andrea Trave, LLNL
Abstract ID: BAPS.2005.MAR.W25.1
Abstract: W25.00001 : Thermal conductivity of B-C-N and BN nanotubes
2:30 PM–2:42 PM
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Authors:
Chih-Wei Chang
Wei-Qiang Han
Alex Zettl
(Physics department, University of California at Berkeley)
We have measured the temperature-dependent thermal conductivity \textit{$\kappa $(T)} of boron-carbon-nitride (B-C-N) and boron nitride (BN) nanotube mats between room temperature and 20K. For both materials, \textit{$\kappa $(T)} increases with increasing temperature, with no sign of saturation. We employ a new analysis method to estimate the intrinsic \textit{$\kappa $(T)} of BN nanotubes converted from B-C-N nanotubes, and find that at room temperature \textit{$\kappa $(T)} of a multi-walled BN nanotube is comparable to that of a multi-walled carbon nanotube. At low temperature, the functional form of \textit{$\kappa $(T)} reflects dimensional confinement.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.MAR.W25.1