Experimental study of band gaps and defect modes in a two-dimensional ultrasonic crystal

A. Khelif; A. Choujaa; R. Laihem; M. Wilm; S. Ballandras; V. Laude; M. Solal

Experimental study of band gaps and defect modes in a two-dimensional ultrasonic crystal

A. Khelif^*
, A. Choujaa
, R. Laihem
, M. Wilm
, S. Ballandras
, V. Laude
, M. Solal

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

13 Citations (Scopus)

Abstract

We report on the experimental observation of the existence and the interaction of localized defect modes in a full acoustic band gap in a two-dimensional lattice of steel cylinders immersed in water. The confinement of defect modes and the splitting of their resonance frequencies are observed and are explained by their evanescent coupling. A new type of waveguiding in a phononic crystal based on the evanescent coupling of defect modes is proposed and demonstrated experimentally. The finite-difference time-domain (FDTD) method is used to interpret the experimental data and it is found that theoretical predictions properly account for the observed spectra.

Original language	English
Pages (from-to)	377-380
Number of pages	4
Journal	Proceedings - IEEE Ultrasonics Symposium
Volume	1
Publication status	Published - 2003
Externally published	Yes
Event	2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States Duration: 5 Oct 2003 → 8 Oct 2003

Cite this

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title = "Experimental study of band gaps and defect modes in a two-dimensional ultrasonic crystal",

abstract = "We report on the experimental observation of the existence and the interaction of localized defect modes in a full acoustic band gap in a two-dimensional lattice of steel cylinders immersed in water. The confinement of defect modes and the splitting of their resonance frequencies are observed and are explained by their evanescent coupling. A new type of waveguiding in a phononic crystal based on the evanescent coupling of defect modes is proposed and demonstrated experimentally. The finite-difference time-domain (FDTD) method is used to interpret the experimental data and it is found that theoretical predictions properly account for the observed spectra.",

author = "A. Khelif and A. Choujaa and R. Laihem and M. Wilm and S. Ballandras and V. Laude and M. Solal",

year = "2003",

language = "English",

volume = "1",

pages = "377--380",

journal = "Proceedings - IEEE Ultrasonics Symposium",

issn = "1051-0117",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "2003 IEEE Ultrasonics Symposium - Proceedings ; Conference date: 05-10-2003 Through 08-10-2003",

}

TY - JOUR

T1 - Experimental study of band gaps and defect modes in a two-dimensional ultrasonic crystal

AU - Khelif, A.

AU - Choujaa, A.

AU - Laihem, R.

AU - Wilm, M.

AU - Ballandras, S.

AU - Laude, V.

AU - Solal, M.

PY - 2003

Y1 - 2003

N2 - We report on the experimental observation of the existence and the interaction of localized defect modes in a full acoustic band gap in a two-dimensional lattice of steel cylinders immersed in water. The confinement of defect modes and the splitting of their resonance frequencies are observed and are explained by their evanescent coupling. A new type of waveguiding in a phononic crystal based on the evanescent coupling of defect modes is proposed and demonstrated experimentally. The finite-difference time-domain (FDTD) method is used to interpret the experimental data and it is found that theoretical predictions properly account for the observed spectra.

AB - We report on the experimental observation of the existence and the interaction of localized defect modes in a full acoustic band gap in a two-dimensional lattice of steel cylinders immersed in water. The confinement of defect modes and the splitting of their resonance frequencies are observed and are explained by their evanescent coupling. A new type of waveguiding in a phononic crystal based on the evanescent coupling of defect modes is proposed and demonstrated experimentally. The finite-difference time-domain (FDTD) method is used to interpret the experimental data and it is found that theoretical predictions properly account for the observed spectra.

UR - https://www.scopus.com/pages/publications/4143083958

M3 - Conference article

AN - SCOPUS:4143083958

SN - 1051-0117

VL - 1

SP - 377

EP - 380

JO - Proceedings - IEEE Ultrasonics Symposium

JF - Proceedings - IEEE Ultrasonics Symposium

T2 - 2003 IEEE Ultrasonics Symposium - Proceedings

Y2 - 5 October 2003 through 8 October 2003

ER -

Experimental study of band gaps and defect modes in a two-dimensional ultrasonic crystal

Abstract

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