Tunable, broadband nonlinear nanomechanical resonator

Hanna Cho, Min Feng Yu, Alexander F. Vakakis, Lawrence A. Bergman, D. Michael McFarland

Research output: Contribution to journalArticlepeer-review


A nanomechanical resonator incorporating intrinsically geometric nonlinearity and operated in a highly nonlinear regime is modeled and developed. The nanoresonator is capable of extreme broadband resonance, with tunable resonance bandwidth up to many times its natural frequency. Its resonance bandwidth and drop frequency (the upper jump-down frequency) are found to be very sensitive to added mass and energy dissipation due to damping. We demonstrate a prototype nonlinear mechanical nanoresonator integrating a doubly clamped carbon nanotube and show its broadband resonance over tens of MHz (over 3 times its natural resonance frequency) and its sensitivity to femtogram added mass at room temperature.

Original languageEnglish (US)
Pages (from-to)1793-1798
Number of pages6
JournalNano letters
Issue number5
StatePublished - May 12 2010


  • Broadband resonance
  • Carbon nanotube
  • Nanoresonator
  • Nonlinear resonance
  • Responsivity

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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