Double-walled carbon nanotubes as hundred gigahertz oscillators

摘要

Based on the van der Waals interaction, the periodically nonlinear potentialof a singe-walled carbon nanotube (SWNT) with finite length in an infinitelength SWNT is analytically obtained. It is found that the inner SWNT canoscillate in the outer SWNT with frequency beyond ten Gigahertz, even up to ahundred Gigahertz.