Controlling Resonance Frequencies of Double-Walled Carbon-Nanotube Oscillators with Divided Outertubes

Abstract

We investigated the resonance frequency distributions of carbon nanotube (CNT) oscillators with an intertube gap using molecular dynamics simulations. The resonance frequency distributions could be regressed by the use of Gaussian distributions. The maximum resonance frequencies linearly decreased with increasing initial velocity of the coretube. For the same initial velocity of the coretube, the maximum resonance frequencies were constant regardless of gap spacing changes, and the center positions of the Gaussian distributions were shifted by changing the outertube length whereas their standard deviations were not changed. Although their standard deviations were influenced by the initial velocity of the coretube, the normalized resonance frequencies could be regressed into single Gaussian distribution within some error. So considering the difficulty of exactly controlling of the initial velocity, the resonance frequency distribution predicted by the gap spacing can give important revolution for CNT-oscillators to be utilized as components of nanoelectromechanical system.

Schematics and Energetics of Bucky Shuttle Memory on Graphene Nanoribbon Array

“…63 During the switching process of the Bucky shuttle memory, the kinetic energy of the Buckyball was converted into its potential energy, dissipated into heat, and converted into the rotation energy of the Buckyball; as a dynamic should be investigated in further works via classical molecular dynamics simulations. [75][76][77][78] Further work should also include quantum mechanics to reveal the structural and electronic properties of unusual carbon nanostructures, electron transport properties, and influence of electric and magnetic fields, 79 although the interpretation of modern quantum theory still seems to be an open question 80 because, in most cases, quantum theory is necessary for the description of the organizational forms of matter. [81][82][83] There is no doubt that temperature greatly affects the performance of the GNF shuttle.…”

Position Sensitivity Study in Molecular Dynamics Simulations of Self-Organized Development of 3D Nanostructures

“…L-shape [15], T-shape [16][17][18] and Z-shape [19][20]. The behavior of nanoelectronic networks [21] and various functional units [22][23][24] has been investigated by experimental methods and by theoretical simulation. Cutting of the ribbons can be presently performed with nanometer precision; about one more order of magnitude improvement is still needed to achieve atomic precision.…”