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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Double-negative acoustic metamaterials


Authors: Habib Ammari, Brian Fitzpatrick, Hyundae Lee, Sanghyeon Yu and Hai Zhang
Journal: Quart. Appl. Math. 77 (2019), 767-791
MSC (2010): Primary 35C20, 74J20
DOI: https://doi.org/10.1090/qam/1543
Published electronically: June 3, 2019
MathSciNet review: 4009331
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Abstract: The aim of this paper is to provide a mathematical theory for understanding the mechanism behind the double-negative refractive index phenomenon in bubbly fluids. The design of double-negative metamaterials generally requires the use of two different kinds of subwavelength resonators, which may limit the applicability of double-negative metamaterials. Herein we rely on media that consists of only a single type of resonant element, and show how to turn the acoustic metamaterial with a single negative effective property obtained in [SIAM J. Math. Anal., 49 (2017), pp. 3252–3276] into a negative refractive index metamaterial, which refracts waves negatively, hence acting as a superlens. Using bubble dimers made of two identical bubbles, it is proved, under the assumption that their volume fraction is small and their orientation is uniformly distributed, that both the effective mass density and the bulk modulus of the bubbly fluid can be negative at frequencies slightly higher than the dipole hybridized frequency for a single constituent bubble dimer.


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Additional Information

Habib Ammari
Affiliation: Department of Mathematics, ETH Zürich, Rämistrasse 101, CH-8092 Zürich, Switzerland
MR Author ID: 353050
Email: habib.ammari@math.ethz.ch

Brian Fitzpatrick
Affiliation: Department of Mathematics, ETH Zürich, Rämistrasse 101, CH-8092 Zürich, Switzerland
MR Author ID: 1228712
Email: brian.fitzpatrick@sam.math.ethz.ch

Hyundae Lee
Affiliation: Department of Mathematics, Inha University, 253 Yonghyun-dong Nam-gu, Incheon 402-751, Republic of Korea
Email: hdlee@inha.ac.kr

Sanghyeon Yu
Affiliation: Department of Mathematics, ETH Zürich, Rämistrasse 101, CH-8092 Zürich, Switzerland
MR Author ID: 959778
Email: sanghyeon.yu@sam.math.ethz.ch

Hai Zhang
Affiliation: Department of Mathematics, HKUST, Clear Water Bay, Kowloon, Hong Kong
MR Author ID: 890053
Email: haizhang@ust.hk

Keywords: Acoustic wave propagation, double-negative metamaterial, Minnaert resonance, hybridization
Received by editor(s): February 6, 2019
Published electronically: June 3, 2019
Additional Notes: The work of the third author was supported by National Research Fund of Korea (NRF-2015R1D1A1A01059357, NRF-2017R1A4A1014735).
The work of the fifth author was partially supported by Research Grant Council of Hong Kong (GRF grant 16304517) and startup fund R9355 from HKUST.
Article copyright: © Copyright 2019 Brown University