Molecular dynamics study on resonance frequency shifts due to linear density of nanoclusters encapsulated in carbon nanotubes

In this paper, we investigated cantilevered carbon-nanotube-resonators encapsulating finite nanoclusters with different linear-densities via classical molecular dynamics simulations, which included the use of the approximation model. Through this we can simply obtain the fundamental frequency shifts of the cantilevered carbon-nanotube-resonators encapsulating finite nanoclusters. As the linear mass density of the encapsulated finite nanocluster increased, the frequency-shift-range also increased. Previous works focused on the resonance-frequency-shift due to the attached mass but our molecular dynamics simulation looked into the dependence on the linear density of the encapsulated nanocluster as an important parameter to analyze the vibration features of carbon-nanotube-resonators. The molecular dynamics simulation results were in good agreement with those of previously related experimental and theoretical works.