Dynamic interactions of ions with carbon nanotubes in water

We extend the two dimensional hydrodynamic model, describing the collective electronic response of a single-wall carbon nanotube to include dielectric media surrounding the nanotube. We make use of the dielectric function for water recently developed by Emfietzoglou et al. based on the optical data of Hayashi et al. to model a carbon nanotube in water. Calculations of the stopping force and self-energy (image potential) are given for channeling of fast ions through the nanotube, showing both the radial and velocity dependence.