Abstract
We calculate the energetics of 4He and 3He atoms in the presence of one, two, and three carbon single-walled nanotubes (SWNTs). The spectrum is obtained for three characteristic sites: inside a tube in the presence of other tubes, within an interstitial channel, and in a groove. Calculations have been performed using both an axially symmetric averaged helium-carbon potential and for a potential constructed as a sum of individual carbon-helium interactions. Thermodynamic properties of helium atoms adsorbed in carbon nanonotube bundles are then studied using the single-particle spectrum. A range of one-dimensional (1D) to two-dimensional (2D) behavior is observed.
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Vranješ, L., Kilić, S. & Krotscheck, E. He Atoms Adsorbed in Carbon Nanotubes and Nanotube Bundles. Journal of Low Temperature Physics 134, 73–78 (2004). https://doi.org/10.1023/B:JOLT.0000012537.05805.63
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DOI: https://doi.org/10.1023/B:JOLT.0000012537.05805.63