Investigation of Ultrasonic Opacity Based on Quarter-Wave Mode Resonance Using a Two-Dimensional Silicon Phononic Crystal

A. Elmadani*, S. Bensallam, M. Idrissi, M. Addouche, A. Elayouch, A. Khelif, A. Bouaaddi, Y. Achaoui, H. Jakjoud

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present a class of phononic crystals for ultrasonic opacity. This composite membrane composed of a host plate made of silicon in which the unit cell describes a sub-wavelength quarter-wave resonator embedded in water. The finite element simulations have shown that such acoustic metamaterial constitutes an ambitious category of ultrasonic insulator providing a deep and wide attenuation in the transmission spectrum. This attenuation reaches −30 dB in a 66% relative bandwidth.

Original languageEnglish
Title of host publicationInnovations in Smart Cities Applications Volume 4 - The Proceedings of the 5th International Conference on Smart City Applications
EditorsMohamed Ben Ahmed, Domingos Santos, Anouar Abdelhakim Boudhir, Ismail Rakip Karas, Olga Sergeyeva
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1044-1050
Number of pages7
ISBN (Print)9783030668396
DOIs
Publication statusPublished - 2021
Externally publishedYes
Event5th International Conference on Smart City Applications, SCA 2020 - Karabuk, Turkey
Duration: 7 Oct 20209 Oct 2020

Publication series

NameLecture Notes in Networks and Systems
Volume183
ISSN (Print)2367-3370
ISSN (Electronic)2367-3389

Conference

Conference5th International Conference on Smart City Applications, SCA 2020
Country/TerritoryTurkey
CityKarabuk
Period7/10/209/10/20

Keywords

  • Acoustic metamaterials
  • Band gap
  • Phononic crystals
  • Quarter-wave resonator
  • Sound comfort

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