Glossary

ultrasound; ultrasons

Sound vibration with a characteristic frequency between 20 kHz and 100 MHz.

metamaterials; metamaterials

Artificial materials with properties that do not exist naturally.

Mie-like resonance

Scattering introduced in electromagnetism, revealing a resonant/exacerbated character around certain frequencies when the wavelength in the scatterer is comparable to its size. The vibration of any object (scatterer) can be decomposed on the basis of these eigenmodes (monopolar, dipolar, quadrupolar...). Each of these modes then exhibits resonance(s) at particular frequencies.

acoustic refractive index; indice de réfraction acoustique

Ratio of the phase velocity in a reference medium to that in the medium under...