Time-varying resonators in acoustic waveguides: a transfer matrix formalism for space-time-modulated metamaterials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00142581" target="_blank" >RIV/00216224:14310/25:00142581 - isvavai.cz</a>

Výsledek na webu

<a href="https://royalsocietypublishing.org/doi/full/10.1098/rspa.2025.0303" target="_blank" >https://royalsocietypublishing.org/doi/full/10.1098/rspa.2025.0303</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rspa.2025.0303" target="_blank" >10.1098/rspa.2025.0303</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Time-varying resonators in acoustic waveguides: a transfer matrix formalism for space-time-modulated metamaterials

Popis výsledku v původním jazyce

The transfer matrix method remains a simple yet powerful tool for modelling acoustic systems, particularly in a closed waveguide geometry. Here, we present a generalization of this method based on the theory of mode-matching, that incorporates the effect of ultra-fast temporal variations in the geometry, applying it to a system of side-branching resonant cavities (quarter wavelength resonators) fixed to an acoustic waveguide, modulated through alteration of the cavity length. We calculate propagation in a waveguide containing both a single resonator and a periodic array. In particular, we predict the generation of additional Doppler-like terms in the reflected and transmitted fields that leads to the modification of the band structure, comparing our results to finite element simulations of space-time-modulated acoustic crystals.

Název v anglickém jazyce

Time-varying resonators in acoustic waveguides: a transfer matrix formalism for space-time-modulated metamaterials

Popis výsledku anglicky

The transfer matrix method remains a simple yet powerful tool for modelling acoustic systems, particularly in a closed waveguide geometry. Here, we present a generalization of this method based on the theory of mode-matching, that incorporates the effect of ultra-fast temporal variations in the geometry, applying it to a system of side-branching resonant cavities (quarter wavelength resonators) fixed to an acoustic waveguide, modulated through alteration of the cavity length. We calculate propagation in a waveguide containing both a single resonator and a periodic array. In particular, we predict the generation of additional Doppler-like terms in the reflected and transmitted fields that leads to the modification of the band structure, comparing our results to finite element simulations of space-time-modulated acoustic crystals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

ISSN

1364-5021

e-ISSN

1471-2946

Svazek periodika

481

Číslo periodika v rámci svazku

2324

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

1-20

Kód UT WoS článku

001603029700005

EID výsledku v databázi Scopus

2-s2.0-105023887221