Acoustic metamaterials (AMs) for sound wave manipulation have attracted significant
attention due to their fascinating functionalities, such as anomalous reflection/refraction …

The effective operation of certain electronic, medical, industrial, and testing equipment relies
on high-quality focusing and imaging capability, which also plays a vital role in the field of …

Acoustic metamaterials are materials with artificially designed structures, which have
characteristics that surpass the behavior of natural materials, such as negative refraction …

We report both experimentally and numerically that a broadband acoustic lens with
asymmetric focusing is realized by dual-layer metasurfaces in air. The acoustic waves can …

We propose a scheme for generating high-efficient acoustic focusing capable of
circumventing obstacles in the propagating medium. This distinct feature that is highly …

In this paper, we propose a reconfigurable acoustic coding metagrating composed of
rotatable open-ended round tubes for realizing broadband sound focusing with tunable …

The applications of acoustic focusing and acoustic asymmetric focusing (AAF) are severely
constrained by the narrow frequency bandwidth. In this paper, we report broad bandwidth …

Acoustic asymmetric focusing (AAF) has a great potential application in medical ultrasound
imaging, focused ultrasound therapy, and nondestructive testing. The advancement of …

Ultrasound focusing in three-dimensional (3D) space is of crucial and enduring significance
in a variety of biomedical and industrial applications. Conventional ultrasound focusing …

Effective sound energy transmission and beam manipulation through stiff and dense
materials such as metal remain daunting tasks. It is in part attributable to the vast impedance …