The anechoic coating capable of absorbing sound energy in low frequency and broadband
is essential to conceal underwater vehicles. In this work, metagrating has been …

Underwater acoustic metamaterials have provided new ideas for underwater acoustic
stealth of various underwater vehicles. However, the existing sound absorption …

Acoustic metamaterials (AMMs) are a form of man-made material that can be specifically
developed to have a sub-wavelength periodic structure with extraordinary characteristics not …

In order to overcome the drawback that the sound absorption band of traditional cavity
resonance acoustic structure is narrow, the functionally graded acoustic structure (FGAS) is …

Owing to the pronounced wave-matter interaction at resonance, meta-absorbers show
impressive potentials for eliminating low-frequency sound even at thicknesses far below the …

The liquid-solid synergistic (LSS) mechanism is put forward for sound absorption. An ultra-
thin LSS anechoic coating model is established to achieve significant low-frequency and …

Mode conversion of elastic waves is ubiquitous in solids and has various applications in
medical imaging, signal processing, vibration suppression, etc. Nonlinear harmonic …

Locally resonant metamaterials usually have narrow bandgaps, which significantly limits
their applications in realistic engineering environments. In this paper, an optimization …

Acoustic lenses play an important role in acoustic sensing and imaging. We propose a
reconfigurable coding meta-lens (RCML) based on helical metamaterials in the air. The …

Acoustic metamaterial structures have received extensive attention for sound and vibration
engineering applications from the scientific community in recent years. However, the real-life …