Effect of number of walls on plasmon energy in interaction of charged particles with double walled metallic nanotubes

The interaction of charged particles with double-walled metallic nanotubes (DWMNTs) has been investigated theoretically. Numerical results for energy dispersion relations as a function of the wave vector are presented when the charged particle is located outside of the nanotube. Calculations show that there are four modes for each angular mode (m) in DWMNT. Calculations show that the plasmon energy of DWMNTs depends on interwall spacing between two walls.