Articles techniques et présentations

Acoustic metamaterials are structured materials of negative mass density or negative bulk-modulus or both of them. Materials are tailored in sub-wavelength dimensions so as to get these negative properties. This paper compares the result of an experimental investigation of acoustic metamaterial with negative bulk-modulus to its COMSOL modeling.

The resonance characteristics of single Helmholtz resonator and the propagation characteristics of metamaterial structure has been studied. The pressure distribution inside the structure agrees well with the theory. The dispersion and propagation characteristics also have been studied experimentally and theoretically.