title: Physical adsorption strength in open systems.
abstract: For a physical adsorption system, the distances of adsorbates from the surface of a substrate can vary significantly, depending on particle loading and interatomic interactions. Although the total adsorption energy is quantified easily, the normalized, per-particle adsorption energies are more ambiguous if some of these particles are far away from the surface and are interacting only weakly with the substrate. A simple analytical procedure is proposed to characterize the distance dependence of the physisorption strength and effective adsorption capacity. As an example, the method is utilized to describe H2 physisorption in a finite bundle of single-walled carbon nanotubes.
authors.forename: M Todd
authors.initials: MT
authors.lastname: Knippenberg
authors.forename: Steven J
authors.initials: SJ
authors.lastname: Stuart
authors.forename: Alan C
authors.initials: AC
authors.lastname: Cooper
authors.forename: G P
authors.initials: GP
authors.lastname: Pez
authors.forename: Hansong
authors.initials: H
authors.lastname: Cheng