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The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate

Evanescent acoustic waves are characterized by purely imaginary or complex wavenumbers. Earlier, in 2019 by using a three dimensional (3D) finite element method (FEM) the possibility of the excitation and registration of such waves in the piezoelectric plates was theoretically shown. In this paper t...

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Autores principales: Smirnov, Andrey, Zaitsev, Boris, Teplykh, Andrey, Nedospasov, Ilya, Golovanov, Egor, Qian, Zheng-hua, Wang, Bin, Kuznetsova, Iren
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8005213/
https://www.ncbi.nlm.nih.gov/pubmed/33806805
http://dx.doi.org/10.3390/s21062238
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author Smirnov, Andrey
Zaitsev, Boris
Teplykh, Andrey
Nedospasov, Ilya
Golovanov, Egor
Qian, Zheng-hua
Wang, Bin
Kuznetsova, Iren
author_facet Smirnov, Andrey
Zaitsev, Boris
Teplykh, Andrey
Nedospasov, Ilya
Golovanov, Egor
Qian, Zheng-hua
Wang, Bin
Kuznetsova, Iren
author_sort Smirnov, Andrey
collection PubMed
description Evanescent acoustic waves are characterized by purely imaginary or complex wavenumbers. Earlier, in 2019 by using a three dimensional (3D) finite element method (FEM) the possibility of the excitation and registration of such waves in the piezoelectric plates was theoretically shown. In this paper the set of the acoustically isolated interdigital transducers (IDTs) with the different spatial periods for excitation and registration of the evanescent acoustic wave in Y-cut X-propagation direction of lithium niobate (LiNbO(3)) plate was specifically calculated and produced. As a result, the possibility to excite and register the evanescent acoustic wave in the piezoelectric plates was experimentally proved for the first time. The evanescent nature of the registered wave has been established. The theoretical results turned out to be in a good agreement with the experimental ones. The influence of an infinitely thin layer with arbitrary conductivity placed on a plate surface was also investigated. It has been shown that the frequency region of an evanescent acoustic wave existence is very sensitive to the changes of the electrical boundary conditions. The results obtained may be used for the development of the method of the analysis of thin films electric properties based on the study of evanescent waves.
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spelling pubmed-80052132021-03-29 The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate Smirnov, Andrey Zaitsev, Boris Teplykh, Andrey Nedospasov, Ilya Golovanov, Egor Qian, Zheng-hua Wang, Bin Kuznetsova, Iren Sensors (Basel) Communication Evanescent acoustic waves are characterized by purely imaginary or complex wavenumbers. Earlier, in 2019 by using a three dimensional (3D) finite element method (FEM) the possibility of the excitation and registration of such waves in the piezoelectric plates was theoretically shown. In this paper the set of the acoustically isolated interdigital transducers (IDTs) with the different spatial periods for excitation and registration of the evanescent acoustic wave in Y-cut X-propagation direction of lithium niobate (LiNbO(3)) plate was specifically calculated and produced. As a result, the possibility to excite and register the evanescent acoustic wave in the piezoelectric plates was experimentally proved for the first time. The evanescent nature of the registered wave has been established. The theoretical results turned out to be in a good agreement with the experimental ones. The influence of an infinitely thin layer with arbitrary conductivity placed on a plate surface was also investigated. It has been shown that the frequency region of an evanescent acoustic wave existence is very sensitive to the changes of the electrical boundary conditions. The results obtained may be used for the development of the method of the analysis of thin films electric properties based on the study of evanescent waves. MDPI 2021-03-23 /pmc/articles/PMC8005213/ /pubmed/33806805 http://dx.doi.org/10.3390/s21062238 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Smirnov, Andrey
Zaitsev, Boris
Teplykh, Andrey
Nedospasov, Ilya
Golovanov, Egor
Qian, Zheng-hua
Wang, Bin
Kuznetsova, Iren
The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate
title The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate
title_full The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate
title_fullStr The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate
title_full_unstemmed The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate
title_short The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO(3) Plate
title_sort experimental registration of the evanescent acoustic wave in yx linbo(3) plate
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8005213/
https://www.ncbi.nlm.nih.gov/pubmed/33806805
http://dx.doi.org/10.3390/s21062238
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