Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal

To achieve high-efficiency and high-resolution acoustic focusing, we used artificial periodic acoustic structures composed of cell arrays to manipulate the acoustic transmission wave front, and used finite element software to simulate the acoustic field characteristics. We found that when focuses ge...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Shuai Tang, Rui Wang, Jianning Han
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2019
Materias:	Acoustic focusing artificial structures local resonance Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/cd42ad8b76334ccc899777b898282109
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:cd42ad8b76334ccc899777b898282109
record_format	dspace
spelling	oai:doaj.org-article:cd42ad8b76334ccc899777b8982821092021-11-19T00:03:07ZAcoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal2169-353610.1109/ACCESS.2019.2932419https://doaj.org/article/cd42ad8b76334ccc899777b8982821092019-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/8784199/https://doaj.org/toc/2169-3536To achieve high-efficiency and high-resolution acoustic focusing, we used artificial periodic acoustic structures composed of cell arrays to manipulate the acoustic transmission wave front, and used finite element software to simulate the acoustic field characteristics. We found that when focuses generated by arc-shaped acoustic excitation sources are incident on one side of the model, the energy will be localized within the structure to reduce its transmission loss, and then the high-resolution emission focus will be generated on the other side of the model. The magnitude of the acoustic pressure at the focus point will change with the frequency of the incident acoustic wave and will reach an extreme value at the resonant frequency. In addition, we explored the acoustic transmission characteristics of structures at different widths and found that it is only necessary to increase the width of the model by an integer multiple of half a wavelength to achieve low loss focusing effects at various distances. The acoustic phenomena studied in this paper may provide new methods for the application of photoacoustic signal detection, ultrasound medical imaging and ultrasonic nondestructive testing.Shuai TangRui WangJianning HanIEEEarticleAcoustic focusingartificial structureslocal resonanceElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 7, Pp 112598-112604 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Acoustic focusing artificial structures local resonance Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Acoustic focusing artificial structures local resonance Electrical engineering. Electronics. Nuclear engineering TK1-9971 Shuai Tang Rui Wang Jianning Han Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
description	To achieve high-efficiency and high-resolution acoustic focusing, we used artificial periodic acoustic structures composed of cell arrays to manipulate the acoustic transmission wave front, and used finite element software to simulate the acoustic field characteristics. We found that when focuses generated by arc-shaped acoustic excitation sources are incident on one side of the model, the energy will be localized within the structure to reduce its transmission loss, and then the high-resolution emission focus will be generated on the other side of the model. The magnitude of the acoustic pressure at the focus point will change with the frequency of the incident acoustic wave and will reach an extreme value at the resonant frequency. In addition, we explored the acoustic transmission characteristics of structures at different widths and found that it is only necessary to increase the width of the model by an integer multiple of half a wavelength to achieve low loss focusing effects at various distances. The acoustic phenomena studied in this paper may provide new methods for the application of photoacoustic signal detection, ultrasound medical imaging and ultrasonic nondestructive testing.
format	article
author	Shuai Tang Rui Wang Jianning Han
author_facet	Shuai Tang Rui Wang Jianning Han
author_sort	Shuai Tang
title	Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
title_short	Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
title_full	Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
title_fullStr	Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
title_full_unstemmed	Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
title_sort	acoustic focusing imaging characteristics based on double negative locally resonant phononic crystal
publisher	IEEE
publishDate	2019
url	https://doaj.org/article/cd42ad8b76334ccc899777b898282109
work_keys_str_mv	AT shuaitang acousticfocusingimagingcharacteristicsbasedondoublenegativelocallyresonantphononiccrystal AT ruiwang acousticfocusingimagingcharacteristicsbasedondoublenegativelocallyresonantphononiccrystal AT jianninghan acousticfocusingimagingcharacteristicsbasedondoublenegativelocallyresonantphononiccrystal
_version_	1718420695474503680

Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal

Ejemplares similares