Phononic crystals (PnCs) control the transport of sound and heat similar to the control of
electric currents by semiconductors and metals or light by photonic crystals. Basic and …

In the past two decades, acoustic metamaterials have garnered much attention owing to
their unique functional characteristics, which are difficult to find in naturally available …

There is growing interest in the development of path coiling-based labyrinthine acoustic
metamaterials for realizing extraordinary acoustical properties such as low-to-mid frequency …

According to the mass law, a dense and thick soundproofing material is generally used to
block low-frequency sounds. However, lightweight thin soundproofing materials in the form …

Conventional sound barriers impede airflow at the same time. Recent advances in acoustic
metasurfaces provide a solution for air-permeable barriers utilizing the Fano-like …

Conventional windows encounter significant challenges in simultaneously achieving noise
reduction and ventilation. Recent advent in origami technology offers new possibilities and …

Ventilation barriers allowing simultaneous sound blocking and free airflow passage are a
great challenge but are necessary for particular scenarios calling for soundproofing …

Acoustic metamaterials provide a powerful tool for designing effective noise-reducing means
at subwavelength scales. This paper is concerned with the sound insulation characteristics …

Acoustic metamaterials have been becoming a popular topic for the better sound insulation
at low frequency than traditional materials. However, due to the local resonance mechanism …

Low-frequency and broadband noise reductions have always been a major industrial
concern, as they pose a significant challenge. Although acoustic metamaterials are …