Kr and ~4He Adsorption on Individual Suspended Single-Walled Carbon Nanotubes

摘要

We report mass and conductance adsorption isotherms of Kr on individual, single-walled, suspended carbon nanotubes for 53 K < T < 90 K for several devices, and of ~4He for 5 K < T < 8 K for two devices. Different nanotubes, probably of different diameter and/or chirality, yield different phase diagrams, full monolayer coverages, and partial wetting characteristics for Kr. The ~4He results show, for one of the devices, a greatly reduced heat of adsorption as compared to the well studied system of ~4He on graphite.