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Micro-Cantilever Biochemical Sensing Based on Robust Finite-Horizon Non-Linear Estimation

[+] Author Affiliations
Xin Wang

Oregon Institute of Technology, Klamath Falls, OR

Edwin E. Yaz, Susan C. Schneider

Marquette University, Milwaukee, WI

Isabelle Dufour

University of Bordeaux, Talence, France

Paper No. IMECE2012-86960, pp. 639-646; 8 pages
doi:10.1115/IMECE2012-86960
From:
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 4: Dynamics, Control and Uncertainty, Parts A and B
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4520-2
  • Copyright © 2012 by ASME

abstract

A novel non-linear estimation based micro-cantilever bio-chemical rheological sensing technique is proposed in this paper. Contrary to classical rheological measurements using micro-cantilevers, which is either restricted to resonant phenomena, or based on the measurement of fluid properties over a range of vibration frequencies, the proposed measurement technique can be applied to arbitrary available vibration frequency. By applying non-linear estimation technique, the fluid characteristic parameters including density and viscosity, can be estimated and used to quantify fluid properties. The preliminary simulation studies demonstrate that vibrating micro-cantilevers with nonlinear estimation can be used as effective and robust fluid characterization micro-system in liquid environments. The proposed technique is encouraging for the development of a useful micro-rheometer on a silicon chip for fluid detection application.

Copyright © 2012 by ASME

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