Acoustic excitations in a non-ideal one-dimensional superlattice with anisotropic impurity layers

Abstract

The virtual crystal approximation is used to study the specifics of propagation of acoustic excitations through a non-ideal one-dimensional superlattice. Numerical modeling is performed to evaluate the dependence of the lowermost acoustic band gap in a two-sublattice phonon crystal (disordered in composition and widths of constituent layers) on impurity layer concentration.

Obtaining Porous Structures in the Form of Parallel Plates on Aluminum Substrates

“…On the other hand. In the semiconductor industry, these porous structures can be used as photonic crystals, to which atoms can be selectively incorporated in these cavities or even to develop or improve acoustic devices since it is possible to control wave propagation, as you can see the applications are various and go hand in hand according to technological advances [11][12][13].…”