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. 2006 Aug 25;97(8):085901.
doi: 10.1103/PhysRevLett.97.085901. Epub 2006 Aug 24.

Isotope effect on the thermal conductivity of boron nitride nanotubes

C W Chang  1 , A M Fennimore, A Afanasiev, D Okawa, T Ikuno, H Garcia, Deyu Li, A Majumdar, A Zettl
Affiliations

Isotope effect on the thermal conductivity of boron nitride nanotubes

C W Chang et al. Phys Rev Lett. .

Abstract

We have measured the temperature-dependent thermal conductivity kappa(T) of individual multiwall boron nitride nanotubes using a microfabricated test fixture that allows direct transmission electron microscopy characterization of the tube being measured. kappa(T) is exceptionally sensitive to isotopic substitution, with a 50% enhancement in kappa(T) resulting for boron nitride nanotubes with 99.5% 11B. For isotopically pure boron nitride nanotubes, kappa rivals that of carbon nanotubes of similar diameter.

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