A phononic crystal acts as a dispersive medium with a phase speed that is lower than the bulk wave speed at frequencies below the resonance of a single resonator. Time reversal is used to compensate for the phase shifts caused by individual resonators as the waves enter the medium and enable focusing of acoustic waves among the crystal. An equivalent circuit, which can predict the dispersion and attenuation of the crystal model, is shown and compared to a full-wave finite-element simulation in frequency and time. The phase shift due to a single resonator is also depicted.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1121/10.0015357 | DOI Listing |
Publication Analysis
Top Keywords
time reversal
8
phononic crystal
8
equivalent circuit
8
single resonator
8
reversal phononic
4
crystal
4
crystal finite-element
4
finite-element modeling
4
modeling equivalent
4
circuit model
4
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!