Acoustic imaging and collimating by slabs of sonic crystalsmade from arrays of rigid cylinders in air

We show some properties of the acoustic propagation in two-dimensional sonic crystals, formed by parallel rigid cylinders placed in air. The transmission through slabs of sonic crystals and the associated band structures are considered. It is shown that within partial band gaps, the waves tend to be...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied physics letters 2004-08, Vol.85 (6), p.1072-1074
Hauptverfasser: Chen, Liang-Shan, Kuo, Chao-Hsien, Ye, Zhen
Format: Artikel
Sprache:eng ; jpn
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We show some properties of the acoustic propagation in two-dimensional sonic crystals, formed by parallel rigid cylinders placed in air. The transmission through slabs of sonic crystals and the associated band structures are considered. It is shown that within partial band gaps, the waves tend to be collimated or guided into the direction in which the propagation is allowed. Such a feature also prevails in the situations in which deaf bands appear. We show that within the partial band gaps, a stable imaging effect can be obtained for flat sonic crystal slabs, in analogy to the cases with photonic crystals.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1781351