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Sensitivity of MEMS/NEMS Biosensors Near Twice Natural Frequency

[+] Author Affiliations
Dumitru I. Caruntu, Martin W. Knecht

University of Texas Pan American, Edinburg, TX

Paper No. IMECE2010-38007, pp. 429-434; 6 pages
doi:10.1115/IMECE2010-38007
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 8: Dynamic Systems and Control, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4445-8
  • Copyright © 2010 by ASME

abstract

Bio-MEMS/NEMS resonator sensors near twice natural frequency for mass detection are investigated. Electrostatic force along with fringe correction and Casimir effect are included in the model. They introduce parametric nonlinear terms in the system. The partial-differential equation of motion of the system is solved by using the method of multiple scales. A direct approach of the problem is then used. Two approximation problems resulting from the direct approach are solved. Phase-amplitude relationship is obtained. Numerical results for uniform electrostatically actuated micro resonator sensors are reported.

Copyright © 2010 by ASME

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