| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000385152 |
| ISSN: | 0103-9733 |
| Authors: | Li, Jian-Wen1 Liu, Nian-Hua1 |
| Institutions: | 1Nanchang University, Institute for Advanced Study, Nanchang, Jiangxi. China |
| Year: | 2015 |
| Season: | Feb |
| Volumen: | 45 |
| Number: | 1 |
| Pages: | 47-53 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Numerical simulations are used to study the conditions controlling the stable oscillation of nanomechanical systems based on carbon nanotubes under periodic harmonic driving force. It is shown that the conditions to sustain the stable oscillation are not only dependent on the driving frequency, but also dependent on the amplitude and the initial phase of the driving force. Once the oscillatory frequency is given, the driving frequency must be equal to the integral multiple of the oscillatory frequency in order to sustain the stable oscillation. We determine the conditions by a combination of equations containing the parameters of the oscillator and the driving force, and solve it numerically. Sustained stable oscillation for the systems with a nonlinear dependence of the friction force on the relative velocity of the tubes can be obtained by properly choosing the amplitude and the initial phase of the periodic harmonic driving force. Both regular and irregular oscillatory modes are observed |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Nanotubos de carbono, Nanoosciladores, Oscilación estable, Simulación numérica |
| Keyword: | Physics and astronomy, Condensed matter physics, Carbon nanotubes, Nanooscillators, Stable oscillation, Numerical simulation |
| Full text: | Texto completo (Ver HTML) |
