Document Detail


The energy density and power flow of acoustic waves propagating in piezoelectric materials.
MedLine Citation:
PMID:  14761047     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
It is shown that, for plane bulk acoustic wave propagating in arbitrary piezoelectric media, the densities of mechanoelectrical and electromechanical energies are always equal in absolute value and have opposite signs. However, in general, the mechanoelectrical and electromechanical power flows of such wave calculated by traditional expression for Poynting vector do not compensate each other, although the total density of these energies is always equal to zero. Discovered discrepancy based on the dissymmetry of piezoelectric constants with respect to the electrical and mechanical indexes may cause difficulties for calculation of important parameters for practical applications such as energy transport velocity of acoustic waves in piezoelectric materials.
Authors:
Boris D Zaitsev; Iren E Kuznetsova
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Publication Detail:
Type:  Letter    
Journal Detail:
Title:  IEEE transactions on ultrasonics, ferroelectrics, and frequency control     Volume:  50     ISSN:  0885-3010     ISO Abbreviation:  IEEE Trans Ultrason Ferroelectr Freq Control     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2004-02-05     Completed Date:  2004-02-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882735     Medline TA:  IEEE Trans Ultrason Ferroelectr Freq Control     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1762-5     Citation Subset:  -    
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