Molecular Dynamics Simulation of Cantilevered Single-Walled Carbon Nanotube Resonators

Ultrahigh frequency nanomechanical resonators based on single-walled carbon nanotubes were investigated using classical molecular dynamics simulations. As the length of the cantilevered carbon nanotube increased, the dissipation rate of the kinetic energy decreased, and the dissipation characteristic under the externally applied force was different from that without the external force. The fundamental frequency increased with the reduction in the cantilevered carbon nanotube length. The frequency in the log scale was almost linearly proportional with the length of the cantilevered carbon nanotube resonator.