Dimensional crossover and quantum effects of gases adsorbed on nanotube bundles
arXiv:cond-mat/0204119
Abstract
Adsorption properties of several gases (Ne, CH4, Ar, Xe) on the external surface of a carbon nanotube bundle are investigated. Calculations are performed at low coverage and variable temperature, and for some temperatures as a function of coverage. Within a simple model (in the limit of very low coverage) we are able to study the evolution of the film's thermal properties from those of a one dimensional (1D) fluid to those of a 2D film. In addition, grand canonical Monte Carlo simulations are performed in order to identify a second layer groove phase, which occurs once a monolayer of atoms covers the external surface. We derive from the simulations the isosteric heat, compresibility and specific heat as a function of coverage. We evaluate alternative models in order to derive quantum corrections to the classical results. We compare our findings with those of recent adsorption experiments.
arXiv comment24 pages, 13 figure
References in corpus (6)
- Quasi-one and two-dimensional transitions of gases adsorbed on nanotube bundles
- Phases of Neon, Xenon, and Methane adsorbed on nanotube bundles
- Zero-temperature equation of state of quasi-one dimensional H2
- Many-body interactions among adsorbed atoms and molecules within carbon nanotubes and in free space
- Isotopic effects of hydrogen adsorption in carbon nanotubes
- Hindered rotation of H2 adsorbed interstitially in nanotube bundles
Cited by in corpus (8)
- Thermodynamics of adsorption of light alkanes and alkenes in single-walled carbon nanotube bundles
- Phonons and specific heat of linear dense phases of atoms physisorbed in the grooves of carbon nanotube bundles
- Vibrations of a chain of Xe atoms in a groove of carbon nanotube bundle
- Lattice-gas Monte Carlo study of adsorption in pores
- The heat capacity of nitrogen chains in grooves of single-walled carbon nanotube bundles
- Specific heats of dilute neon inside long single-walled carbon nanotube and related problems
- Dimensional Crossover of Dilute Neon inside Infinitely Long Single-Walled Carbon Nanotubes Viewed from Specific Heats
- Universality in adsorbate ordering on nanotube surfaces