Within a time span of 15 years, acoustic metamaterials have emerged from academic
curiosity to become an active field driven by scientific discoveries and diverse application …

Guided waves, elastic waves propagating through bounded structures, play a pivotal role in
various applications, including ultrasonic non-destructive testing and structural health …

Metamaterials, from optics to radio frequencies and acoustics, have attracted significant
attention over the last few decades, with promising applications in a wide range of …

Following the advent of electromagnetic metamaterials, researchers working in wave
physics have translated concepts of engineered media to acoustics, elastodynamics and …

The bandgap properties exhibited by local resonant metamaterials provide a potential
approach for structural vibration reduction. In this work, we introduce the local resonance …

Metasurfaces are planar metamaterials with a flat surface and a subwavelength thickness
that are able to shape arbitrary wave fronts such as focusing or imaging. There is a broad …

Accessing subwavelength information about a scene from the far-field without invasive near-
field manipulations is a fundamental challenge in wave engineering. Yet it is well …

Elastic waves exhibit rich polarization characteristics absent in acoustic and electromagnetic
waves. By designing a solid elastic metamaterial based on three-dimensional anisotropic …

The diffraction-limited resolution of light focused by a lens was derived in 1873 by Ernst
Abbe. Later in 1952, a method to reach sub-diffraction light spots was proposed by …

Wave frequency is a critical parameter for applications ranging from structural health
monitoring, noise control, and medical imaging to quantum of energy in matter. Frequency …