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Nanomechanical mass detection using nonlinear oscillations

Authors
Dai, Mai DucEom, KilhoKim, Chang-Wan
Issue Date
16-11월-2009
Publisher
AMER INST PHYSICS
Keywords
micromechanical resonators; nanoelectromechanical devices; oscillations
Citation
APPLIED PHYSICS LETTERS, v.95, no.20
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
95
Number
20
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/118915
DOI
10.1063/1.3265731
ISSN
0003-6951
Abstract
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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