Imperfection-induced internal resonance in nanotube resonators

P. Belardinelli*, S. Lenci, F. Alijani

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Through molecular dynamics simulations, we demonstrate the possibility of internal resonances in single-walled carbon nanotubes. The resonant condition is engineered with a lack of symmetry in the boundary condition and activated by increasing the energy exchange with a coupled thermal bath. The critical temperature threshold for initiating modal interaction is found to be chirality-dependent. By applying the proper orthogonal decomposition algorithm to molecular dynamics time responses, we show how the thermal fluctuations influence the vibrational behaviour of the nanotube leading to both flexural–flexural and flexural–longitudinal resonances. Understanding the interaction between nanotube resonators and the thermal bath is crucial for designing and optimizing their performance for various nanoscale sensing, actuation, and signal processing applications.

Original languageEnglish
Article number118130
Number of pages9
JournalJournal of Sound and Vibration
Volume570
DOIs
Publication statusPublished - 2024

Keywords

  • Carbon nanotube
  • Imperfect boundary conditions
  • Internal resonance
  • Molecular dynamics
  • Thermoelasticity

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