Impedance is an important issue in the design of acoustic lenses because mismatched impedance is detrimental to real focusing applications. Here, we report two designs of acoustic lenses that focus acoustic waves in water and air, respectively. They are tailored by acoustic meta-surfaces, which are rigid thin plates decorated with periodically distributed sub-wavelength slits. Their respective building blocks are constructed from the coiling-up spaces in water and the layered structures in air. Analytic analysis based on coupled-mode theory and transfer matrix reveals that the impedances of the lenses are matched to those of the background media. With these impedance-matched acoustic lenses, we demonstrate the acoustic focusing effect by finite-element simulations.
Skip Nav Destination
,
Article navigation
18 January 2016
Research Article|
January 19 2016
High transmission acoustic focusing by impedance-matched acoustic meta-surfaces
Rasha Al Jahdali
;
Rasha Al Jahdali
Division of Mathematical and Computer Sciences and Engineering,
King Abdullah University of Science and Technology (KAUST)
, Thuwal 23955-6900, Saudi Arabia
Search for other works by this author on:
Rasha Al Jahdali
Ying Wu
a)
Division of Mathematical and Computer Sciences and Engineering,
King Abdullah University of Science and Technology (KAUST)
, Thuwal 23955-6900, Saudi Arabia
a)
Email: [email protected]
Appl. Phys. Lett. 108, 031902 (2016)
Article history
Received:
November 24 2015
Accepted:
January 03 2016
Citation
Rasha Al Jahdali, Ying Wu; High transmission acoustic focusing by impedance-matched acoustic meta-surfaces. Appl. Phys. Lett. 18 January 2016; 108 (3): 031902. https://doi.org/10.1063/1.4939932
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Charge localization in optoelectronic and photocatalytic applications: Computational perspective
Francesco Ambrosio, Julia Wiktor
Diamagnetic levitation of water realized with a simple device consisting of ordinary permanent magnets
Tomoya Naito, Tomoaki Suzuki, et al.
Related Content
Broadband integrative acoustic asymmetric focusing lens based on mode-conversion meta-atoms
Appl. Phys. Lett. (June 2020)
Dynamic non-reciprocal meta-surfaces with arbitrary phase reconfigurability based on photonic transition in meta-atoms
Appl. Phys. Lett. (January 2016)
Steering of SH wave propagation in electrorheological elastomer with a structured meta-slab by tunable phase discontinuities
AIP Advances (September 2017)
Meta-lens design with low permittivity dielectric materials through smart transformation optics
Appl. Phys. Lett. (September 2015)
Highly efficient isolation of waterborne sound by an air-sealed meta-screen
AIP Advances (May 2017)