  We investigate a new generation of fullerene nano-oscillators: a
single-walled carbon nanotube with one buckyball inside with an operating
frequency in the tens-of-gigahertz range. A quantitative characterization of
energy dissipation channels in the peapod pair has been performed via molecular
dynamics simulation. Edge effects are found to the dominant cause of dynamic
friction in the carbon-peapod oscillators. A comparative study on energy
dissipation also reveals significant impact of temperature and impulse velocity
on the frictional force.
