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Phylogeny reconstruction and hybrid analysis of populus (Salicaceae) based on nucleotide sequences of multiple single-copy nuclear genes and plastid fragments.

Author(s): Wang Z, Du S, Dayanandan S, Wang D, Zeng Y, Zhang J

PLoS One. 2014;9(8):e103645 Authors: Wang Z, Du S, Dayanandan S, Wang D, Zeng Y, Zhang J

Article GUID: 25116432
Simulation of electromechanical coupling coefficient by modified modal frequency spectrum method including the electrode effect

Author(s): Zhang Y, Wang Z, Cheeke JD

Ultrasonics. 2000 Mar;38(1-8):114-7 Authors: Zhang Y, Wang Z, Cheeke JD

Article GUID: 10829640
Title:Simulation of electromechanical coupling coefficient by modified modal frequency spectrum method including the electrode effect
Authors:Zhang Y,  Wang Z,  Cheeke JD
Link:https://www.ncbi.nlm.nih.gov/pubmed/10829640?dopt=Abstract
Category:Ultrasonics
PMID:10829640
Dept Affiliation: PHYSICS
1 Physics Department, Concordia University, Montreal, Quebec, Canada.

Description:

Simulation of electromechanical coupling coefficient by modified modal frequency spectrum method including the electrode effect

Ultrasonics. 2000 Mar;38(1-8):114-7

Authors: Zhang Y, Wang Z, Cheeke JD

Abstract

An approximate formula has been developed to determine the electromechanical coupling coefficient of the piezoelectric film in a four-layer composite resonator, which includes two electrodes. In this formula, the coupling coefficient can be calculated from the distribution of the effective coupling coefficients, k2eff, which are given by the modal frequency spectrum of the composite resonator. The feasibility of this method has been demonstrated with a ZnO/SiO2 composite resonator for different electrode thickness. The effect of mechanical propagation loss in both piezoelectric layer and substrate has also been studied.

PMID: 10829640 [PubMed]