Engineering metalenses for planar optics and acoustics

B Oh, K Kim, D Lee, J Rho - Materials Today Physics, 2023 - Elsevier
Metalens, a two-dimensional planar system composed of strategically engineered
subwavelength structures, facilitates precise manipulation in the process of both light and …

Reflected acoustic wave manipulation by metasurfaces in a grazing flow

R Qu, J Guo, Y Li, Q Tan, Z Peng, L Wang… - International Journal of …, 2024 - Elsevier
Acoustic metasurfaces (AMs) can manipulate acoustic waves in ways that are not reachable
in natural materials, offering significant implications for engineering applications such as …

Two-sided acoustic modulator for broadband and individual control of reflected and transmitted sound waves

A Chen, X Zhang - Physical Review Applied, 2024 - APS
Acoustic wave modulation plays a pivotal role in various applications, including sound-field
reconstruction, wireless communication, and particle manipulation, among others. However …

Acoustic metaholograms for encrypted information transmission

X Fan, Y Zhu, N Li, C Weng, B Assouar - Physical Review Applied, 2023 - APS
We report on the theoretical, numerical, and experimental investigation of secure acoustic
holography. This secure holography is achieved via an encoded hologram generated by a …

Reconfigurable and Phase‐Engineered Acoustic Metasurfaces for Broadband Wavefront Manipulation

K Zeng, Z Li, Z Guo, Z Wang - Advanced Physics Research, 2024 - Wiley Online Library
A novel type of phase‐engineered acoustic metasurfaces with reconfigurable properties is
reported, enabling the flexible broadband manipulation of reflected wavefronts. The …

Acoustic metascreen for broadband wavefront manipulation with stationary phase gradients

C Liu, N Wang, Z Gu, Y Li, J Zhu - Europhysics Letters, 2024 - iopscience.iop.org
The development of an efficient acoustic metascreen utilizing artificial micro-structured
metamaterials holds paramount importance for the manipulation of acoustic wavefronts …

Timoshenko–Ehrenfest Beam‐Based Reconfigurable Elastic Metasurfaces for Multifunctional Wave Manipulation

G Lee, W Choi, B Ji, M Kim, J Rho - Advanced Science, 2024 - Wiley Online Library
Abstract Herein, a Timoshenko–Ehrenfest beam‐based reconfigurable elastic metasurface
is introduced that can perform multifunctional wave phenomena within a single substrate …

Angle-variant metamaterial with reconfigurable phase modulation

A Chen, Z Yang, S Anderson, X Zhang - Physical Review Applied, 2024 - APS
Acoustic metamaterials introduce unprecedented ways by which to modulate acoustic
waves in amplitude, phase, or both. Reconfigurable acoustic metamaterials yield …

Tunable acoustic transmission control and dual-mode ventilated sound insulation by a coupled acoustic metasurface

S Gao, X Hu, Y Mo, H Zeng, F Mao, Y Zhu, H Zhang - Physical Review Applied, 2024 - APS
In this paper, we present an alternative design for an acoustic metasurface with sparse units
featuring open-ended pipes located on both sides of a central cavity, which can be tuned by …

The Effects of Manufacturing Errors on the Performance of Acoustic Metamaterial Lenses Operating in the MHz Regime

F Qin, J Zhang, BW Drinkwater - Small Science, 2024 - Wiley Online Library
This article explores the use of acoustical metamaterials to design lenses in the megahertz
frequency range of relevance to applications in nondestructive testing and medical imaging …