Quasi–one dimensional fluids that exhibit higher dimensional behavior

FluidSoconfined within narrow channels exhibit a variety of phases and phase transitions associated with their reduced dimensionality. In this review paper, we illustrate the crossover from quasi–one dimensional to higher effective dimensionality behavior of uids adsorbed within different carbon nanotubes geometries. In the single nanotube geometry, no phase transitionSocan occur at fnite temperature. Instead, we identify a crossover from a quasi–one dimensional to a two dimensional behavior of the adsorbate. In bundles of nanotubes, phase transitions at fnite temperature arise from the transverse coupling of interactions between channels.