Broadband acoustic manipulation by mimicking an arbitrary potential well

We have proposed a continuous-index system to mimic an arbitrary “potential well” for realizing versatile manipulations on acoustic waves within a broadband. An analytical description of the acoustic propagation in the system is developed, and its validity is verified by using full-wave simulation....

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Bibliographic Details
Published in:Applied physics letters 2014-06, Vol.104 (24)
Main Authors: Zhang, Zhe, Liang, Bin, Li, Rui-qi, Zou, Xin-ye, Yin, Lei-lei, Cheng, Jian-Chun
Format: Article
Language:English
Subjects:
Acoustic propagation
Acoustics
Applied physics
Bends
Broadband
Computer simulation
Incident waves
Sound transmission
Wave propagation
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Summary:We have proposed a continuous-index system to mimic an arbitrary “potential well” for realizing versatile manipulations on acoustic waves within a broadband. An analytical description of the acoustic propagation in the system is developed, and its validity is verified by using full-wave simulation. Both the theoretical and numerical results show that by tailoring the refractive-index profile, the system either bends the incident wave like a repulsive potential, or attracts and traps the wave like an attractor. Our design may have potential implication in various situations such as medical ultrasound imaging and sound absorbing.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4884827