Cavity-type hypersonic phononic crystals

Cavity-type hypersonic phononic crystals

Blog Article

We report on the engineering of the phonon dispersion diagram in monodomain anodic porous alumina (APA) films through the porosity and physical state of the material residing in the nanopores.Lattice symmetry and inclusion materials are theoretically identified to be the main factors which Sauce Pots control the hypersonic acoustic wave propagation.This involves the interaction between the longitudinal and the transverse modes in the effective medium and a flat band characteristic of the material residing in the RUB CARIBBEAN JERK cavities.

Air and filled nanopores, therefore, display markedly different dispersion relations and the inclusion materials lead to a locally resonant structural behavior uniquely determining their properties under confinement.APA films emerge as a new platform to investigate the rich acoustic phenomena of structured composite matter.