NDLI: Influence of stiffness change due to mass loading on resonant microcantilever mass sensor's performance

Content Provider	IEEE Xplore Digital Library
Author	Zihajehzadeh, S. Maroufi, M. Shamshirsaz, M. Rezaie, A.H.
Copyright Year	2010
Description	Author affiliation: Electrical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., P.B. 15875-4413. Tehran, Iran (Rezaie, A.H.) \|\| New Technologies Research Center, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., P.B. 15875-4413. Tehran, Iran (Zihajehzadeh, S.; Maroufi, M.; Shamshirsaz, M.)
Abstract	Capability of piezoelectric microcantilever mass sensors to detect very small amount of mass, such as detection of a single virus has attracted many researchers' interests. In many cases, detection of mass is performed by adsorbing of materials in porous matrixes on the sensor surface, in which the adsorbed material does not form a solid layer on the cantilever surface. On the other hand, there are materials such as gold and mercury that constitute a solid layer on cantilever surface. The thickness and the young modulus of this layer, increase the cantilever's stiffness. Consequently, both the mass and the stiffness changes, alter the cantilever's natural frequency, which should be considered in modeling. Two lumped parameter modeling approach for resonant microcantilevers mass sensors has been investigated. Model I neglects the stiffness change of the cantilever sensor after mass loading. In model II the added mass constitutes a solid layer on the cantilever bottom surface. This additional solid layer affects the mass and also the stiffness of microcantilever. The results shown that model II represents a better modeling comparing to model I with respect to experimental data. For cantilevers of the same thickness in this study, the stiffness variation percentage due to added mass layer remains constant. Furthermore, the deviation between model I and model II is the same regardless the cantilevers dimensions.
Starting Page	1008
Ending Page	1012
File Size	114557
Page Count	5
File Format	PDF
ISBN	9781424480319
e-ISBN	9781424480326
DOI	10.1109/AIM.2010.5695900
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-06
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensors Load modeling Loading Data models Solids Sensitivity
Content Type	Text
Resource Type	Article

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