Vibrational Analysis of Cantilevered Carbon-Nanotube Resonator with Different Linear Density of Attached Mass: Molecular Dynamics Simulations

Vibrational behaviors of the cantilevered carbon-nanotube-resonator including the attached nanocluster were investigated via classical molecular dynamics simulations. A nanocluster with a finite length was modeled by some atomic rings, and then the mass of the nanocluster was equally distributed on the carbon atoms, composed of the atomic rings. Additionally, the number of atomic rings was selected under the condition that the length of the nanocluster was approximately the same as that of the atomic rings. The effective density factor, which could be considered as the single parameter affecting the resonance frequency shift, was significantly influenced by the mass, the position, and the linear density of the attached nanocluster. The linear density of the attached nanocluster was an important parameter to analyze the vibrational behavior of the CNT-resonator, including the attached nanocluster.