Positive, negative, zero refraction, and beam splitting in a solid/air phononic crystal: Theoretical and experimental study

被引：103

作者：

Bucay, J. ^{[1
]}

Roussel, E. ^{[2
]}

Vasseur, J. O. ^{[2
]}

Deymier, P. A. ^{[1
]}

Hladky-Hennion, A-C. ^{[2
]}

Pennec, Y. ^{[2
]}

Muralidharan, K. ^{[1
]}

Djafari-Rouhani, B. ^{[2
]}

Dubus, B. ^{[2
]}

机构：

[1] Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ 85721 USA

[2] CNRS, UMR 8520, Inst Elect Microelect & Nanotechnol, F-59652 Villeneuve Dascq, France

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 21期

关键词：

band structure; finite difference time-domain analysis; inclusions; optical beam splitters; organic compounds; phononic crystals; refraction; refractive index; PERIODIC STRUCTURES; SELF-COLLIMATION; ELASTIC-WAVES; STOP-BANDS; SCATTERING; ARRAYS; GAPS;

D O I：

10.1103/PhysRevB.79.214305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a phononic crystal (PC) consisting of a square array of cylindrical polyvinylchloride inclusions in air that exhibits positive, negative, or zero refraction depending on the angle of the incident sound beam. For all three cases of refraction, the transmitted beam undergoes splitting upon exiting the crystal. These properties are analyzed theoretically using finite difference time domain method and are demonstrated experimentally. Band structures and equifrequency surfaces (EFSs) calculated with the plane-wave expansion method show that the observed properties result from the unique geometry of the PC's EFS as compared to that of the incident media.

引用

页数：7

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