Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 279, Issue -, Pages 254-262Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2018.06.028
Keywords
MEMS resonant sensors; 3-DOF coupled resonator; Mode localization; Mass sensing; Reversibility; Magnetic nanoparticles
Funding
- Microsys laboratory, Montefiore Institute, University of Liege
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In this paper, for the first time, the mass sensitivity of a 3-DoF mode localized electrostatically coupled resonator is investigated and characterized under atmospheric pressure. A reversible method is used in which nanoparticles are added on and removed from one resonator of the 3-DOF coupled resonator system. Furthermore, a comparison of three mass sensitivity characterization methods was carried out: resonance frequency shift, resonance vibration amplitude change and resonance vibration amplitude ratio. MATLAB/SIMULINK and COMSOL Multiphysics models for the 3-DoF coupled resonator system are presented. The simulation results and theoretical calculations are in good agreement with the experimental data. The results show that a 3-DOF mode localized coupled resonator has potential to be employed for biosensing applications. (C) 2018 Elsevier B.V. All rights reserved.
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