IMPROVED PREDICTION OF ELECTRODES' MASS LOADING EFFECT ON MEMS FBAR STRUCTURE IN LONGITUDINAL RESONANCE

被引：0
|
作者：
Ruimi, Annie [1 ]
Liang, Yueming [1 ]
McMeeking, Robert M. [1 ]
机构：
[1] Texas A&M Univ Qatar, Dept Mech Engn, Doha, Qatar
来源：
SMASIS2008: PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS - 2008, VOL 1 | 2009年
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D O I：
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中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper, we derive an exact one-dimensional rule for predicting mass loading effect due to electrodes by analyzing a FBAR structure consisting of a piezoelectric layer and two electrodes in longitudinal resonance. We validate the numerical scheme using aluminum nitride as the piezoelectric material and gold and aluminum for the top and bottom electrodes respectively. Results are compared with three-dimensional finite elements simulations obtained earlier. It is seen that the new rule predicts higher values of the resonant frequency and constitutes an improvement over an elementary rule particularly for electrodes thicknesses greater than 20% of the piezoelectric layer thickness.
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页码：397 / 402
页数：6
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