Open AccessNumeric Modeling of Phononic Crystal with Time-Dependent Properties
Author(s) -
A. V. Demin,
Б. Б. Дамдинов,
Yu. A. Baloshin
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/704/1/012017
Subject(s) - crystal (programming language) , band gap , acoustic metamaterials , materials science , phase (matter) , work (physics) , phase velocity , restructuring , phonon , acoustics , condensed matter physics , physics , optics , optoelectronics , computer science , finance , quantum mechanics , economics , thermodynamics , programming language
The research is devoted to numeric modeling of phononic crystals with time-depended properties of periodic structure. There are many works describing phononic crystal with a tunable bandgap. The mechanism of restructuring can have a different physical nature. In this turn, we developed model of phonon crystal with fast-changing properties, where frequency of changing and propagating wave have the same order. The influence of time-dependent characteristics on propagation of wave packets, waves with different initial phase is shown in this work. Parameters of the crystal cell are given by time-dependent; signal propagation has significant differences from the static case. It was shown that under certain conditions a phononic crystal acquires the properties of a phase filter.