4.6 Article

Nanomechanical mass detection using nonlinear oscillations

期刊

APPLIED PHYSICS LETTERS
卷 95, 期 20, 页码 -

出版社

AMER INST PHYSICS
DOI: 10.1063/1.3265731

关键词

micromechanical resonators; nanoelectromechanical devices; oscillations

资金

  1. Korea Science and Engineering Foundation (KOSEF) [2009-0071246, 2009-0067895]
  2. National Research Foundation of Korea [2009-0071246, 2009-0067895] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Nanomechanical resonators have allowed the in vitro molecular recognition. Most of detection is implemented in harmonic oscillation regime, albeit nanomechanical resonators can easily reach the nonlinear oscillation regime. In this letter, we have studied the nanomechanical mass detection using nonlinear oscillators based on continuum elastic model. It is shown that nonlinear oscillation leads to the unique resonant frequency shift due to mass adsorption, quite different from that in harmonic oscillation. Moreover, the effect of mechanical tension on the mass detection in nonlinear oscillation is also discussed. This study highlights the nonlinear oscillation for label-free detection.

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