An Investigation on Acoustic Wave Focalization by a Square Lattice Flat Lens
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Polska Akad Nauk, Polish Acad Sciences, Inst Fundamental Tech Res Pas
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A sonic crystal consists of a finite-size periodic array of scatters embedded in a background material. One of the fascinating properties of sonic crystals is the focusing phenomenon. In this study, the near field focusing effect of a solid-air 2D sonic crystal lens with a square lattice configuration is investigated in the second frequency band. The band structure and equifrequency contour of the crystal are analyzed to reveal the dispersion of an acoustic wave on the crystal structure. The frequency dependence of the acoustic wave focalization by the sonic crystal flat lens is demonstrated via Finite Difference Time Domain simulation results and experimental measurements.
Açıklama
Anahtar Kelimeler
square lattice sonic crystal, wave focusing, plane-wave expansion method, FDTD simulation
Kaynak
Archives of Acoustics
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
37
Sayı
1
