Guiding and filtering acoustic waves in a two-dimensional phononic crystal

Abdelkrim Khelif*, Abdelkrim Choujaa, Sarah Benchabane, Vincent Laude, Bahram Djafari-Rouhani

*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

An experimental and theoretical study of the guiding, bending and filtering of acoustic waves in an ultrasonic crystal is reported. The crystal consists of a two-dimensional periodical array of steel rods immersed in water, for which a complete acoustic band gap is found experimentally. Waveguides for acoustic waves are created by removing one row of rods and the possibility of including sharp bends owing to the strong spatial confinement within the full band gap is demonstrated. Stubs can be further added by removing rods from the side-walls of the waveguide. Depending on the stubs geometry, definite wavelengths are reflected from the stubs creating a one-dimensional bandgap within the waveguide transmission spectrum, the bandwidth of which can be controlled by arranging a proper sequence of stubs.

Original languageEnglish
Title of host publicationProceedings - 2004 IEEE Ultrasonics Symposium
Subtitle of host publicationA Conference of the IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Society, UFFC-S
EditorsM.P. Yuhas
Pages654-657
Number of pages4
DOIs
Publication statusPublished - 2004
Externally publishedYes
Event2004 IEEE Ultrasonics Symposium - Montreal, Que., Canada
Duration: 23 Aug 200427 Aug 2004

Publication series

NameProceedings - IEEE Ultrasonics Symposium
Volume1
ISSN (Print)1051-0117

Conference

Conference2004 IEEE Ultrasonics Symposium
Country/TerritoryCanada
CityMontreal, Que.
Period23/08/0427/08/04

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