Colloquium: Condensed phases of gases inside nanotube bundles

M. Mercedes Calbi, Milton W. Cole, Silvina M. Gatica, Mary J. Bojan, George Stan

Research output: Contribution to journalReview articlepeer-review

227 Scopus citations


An overview is presented of the various phases predicted to occur when gases are absorbed within a bundle of carbon nanotubes. The behavior may be characterized by an effective dimensionality, which depends on the species and the temperature. Small molecules are strongly attracted to the interstitial channels between tubes. There, they undergo transitions between ordered and disordered quasi-one-dimensional (1D) phases. Both small and large molecules display 1D and/or 2D phase behavior when adsorbed within the nanotubes, depending on the species and thermodynamic conditions. Finally, molecules adsorbed on the external surface of the bundle exhibit 1D behavior (striped phases), which crosses over to 2D behavior (monolayer film) and eventually 3D behavior (thick film) as the coverage is increased. The various phases exhibit a wide variety of thermal and other properties.

Original languageEnglish (US)
Pages (from-to)857-865
Number of pages9
JournalReviews of Modern Physics
Issue number4
StatePublished - Oct 2001

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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