Phononic crystals and acoustic metamaterials are periodic structures whose effective
properties can be tailored at will to achieve extreme control on wave propagation. Their …

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 …

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 …

The advance of artificial intelligence and graphene-based composites brings new vitality
into the conventional design of acoustic lenses which suffers from high computation cost and …

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

In this work, we present a lens based on a thin hollow ABS spherical container structure,
which can be filled up with different compatible liquids. The acoustic jet can be dynamically …

We present a water-immersed ultrasound high-efficiency Fresnel lens based on the theory of
extraordinary acoustic transmission of plate-wave resonance. We studied, experimentally …

Aiming at the problem that ultrasonic detection is greatly affected by temperature drift, this
paper investigates a novel temperature compensation algorithm. Ultrasonic impedance …

Acoustic focusing has extensive applications in medical ultrasound and nondestructive
detection. The recent rapid development of acoustic metamaterials and metasurfaces has …

We realize broadband acoustic focusing effect by employing two symmetric Airy beams
generated from phased arrays, in which the units of the phased arrays consist of different …