The outer shell surface is electrically charged and vibrated by the microwave emitters to generate a first electromagnetic field. The acoustic vibration resonant gas-filled cavities each have a cavity ...

Closed metallic structures, such as Faraday cages, are structures that block electromagnetic signals and prevent conventional ...

Two experiments demonstrating that a cylindrical cloak formerly introduced for linear surface liquid waves works equally well for sound and electromagnetic waves. This structured cloak behaves like an ...

Surface acoustic waves (SAWs)—elastic vibrations that travel along the surface of materials like ripples on a pond—play a crucial role in modern communication technologies. These are key ...

Recently, a research team at POSTECH has designed a metasurface that can control the acoustic or elastic waves ... of underwater sound but also of vibration. The research team has presented ...

The Eco Patch System acts as an autonomous torsional damper, converting mechanical, thermal and acoustic vibrations from rotating systems into a counteracting electromagnetic field – entirely ...

Recent studies have demonstrated engineering metamaterials with unprecedented characteristics such as left-handedness with simultaneous negative permittivity and permeability, negative lens that focus ...

Unlike electromagnetic waves, acoustical waves can be used to find objects and also identify them. As described in a new paper in Applied Physics Letters, the researchers used a 2D acoustic array ...

Recent studies have demonstrated engineering metamaterials with unprecedented characteristics such as left-handedness with simultaneous negative permittivity and permeability, negative lens that focus ...