The thermal effects on the negative refraction of sonic crystals

Liang Yu Wu; Wen Pei Yang; Lien Wen Chen

doi:10.1016/j.physleta.2007.12.030

The thermal effects on the negative refraction of sonic crystals

Liang Yu Wu, Wen Pei Yang, Lien Wen Chen

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The thermal effects on the refractive direction of a sonic crystal consisted of steel rods in air background is investigated. By means of varying the temperature, the refractive direction and the range of the incident angle with the negative refraction are changed accordingly due to the variations of the air density and sound speed. The focus behaviors, intensity and distance, of the sonic crystal plane lens with varying temperature are studied. Moreover, at certain frequencies and incident angles, the refractive angles can be changed from negative to positive by varying the temperature of a sonic crystal with air background. The tunable sonic crystal can be used to design various novel ultrasonic devices.

Original language	English
Pages (from-to)	2701-2705
Number of pages	5
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	372
Issue number	15
DOIs	https://doi.org/10.1016/j.physleta.2007.12.030
Publication status	Published - 2008 Apr 7

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1016/j.physleta.2007.12.030

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AB - The thermal effects on the refractive direction of a sonic crystal consisted of steel rods in air background is investigated. By means of varying the temperature, the refractive direction and the range of the incident angle with the negative refraction are changed accordingly due to the variations of the air density and sound speed. The focus behaviors, intensity and distance, of the sonic crystal plane lens with varying temperature are studied. Moreover, at certain frequencies and incident angles, the refractive angles can be changed from negative to positive by varying the temperature of a sonic crystal with air background. The tunable sonic crystal can be used to design various novel ultrasonic devices.

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The thermal effects on the negative refraction of sonic crystals

Abstract

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