Static and Dynamic Amplification Using Strong Mechanical Coupling

Type
Article

Authors
Ilyas, Saad
Jaber, Nizar
Younis, Mohammad I.

KAUST Department
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division

Online Publication Date
2016-07-28

Print Publication Date
2016-10

Date
2016-07-28

Abstract
Amplifying the signal-to-noise ratio of resonant sensors is vital toward the effort to miniaturize devices into the sub-micro and nano regimes. In this paper, we demonstrate theoretically and experimentally, amplification through mechanically coupled microbeams. The device is composed of two identical clamped-clamped beams, made of polyimide, connected at their middle through a third beam, which acts as a mechanical coupler. Each of the clamped-clamped microbeams and the coupler are designed to be actuated separately, hence providing various possibilities of actuation and sensing. The coupled resonator is driven into resonance near its first resonance mode and its dynamic behavior is explored via frequency sweeps. The results show significant amplification in the resonator amplitude when the signal is measured at the midpoint of the coupler compared with the response of the individual uncoupled beams. The static pull-in characteristics of the resonator are also studied. It is shown that the compliant mechanical coupler can serve as a low-power radio frequency switch actuated at low voltage loads. [2016-0100]

Citation
Ilyas S, Jaber N, Younis MI (2016) Static and Dynamic Amplification Using Strong Mechanical Coupling. Journal of Microelectromechanical Systems 25: 916–921. Available: http://dx.doi.org/10.1109/JMEMS.2016.2591719.

Acknowledgements
King Abdullah University of Science and Technology

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
Journal of Microelectromechanical Systems

DOI
10.1109/JMEMS.2016.2591719

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