Theoretical demonstration of the hybrid focusing points of sonic crystal flat lenses and possible applications
Küçük Resim Yok
Tarih
2013
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We demonstrate the hybrid focusing points of sonic crystals for a multi-source array applied to flat sonic crystal lenses. The contributions of different point source couples form hybrid focusing points. Ray-trace analyses are conducted for acoustic flat lenses with multi-source configurations. The finite-difference time-domain (FDTD) simulation of flat lenses with multi-source configurations demonstrates the establishment of pure and hybrid focusing points in a pyramidal constellation. The number of focusing points in the pyramidal constellation depends on the number of point sources. We propose an acoustic device for fine-tuning the location of a far-field hybrid focusing point and discuss its benefits for acoustic energy focusing application. © 2013 Chinese Physical Society and IOP Publishing Ltd.
Açıklama
Anahtar Kelimeler
acoustic flat lens, negative refraction, sonic crystal metamaterials, wave focusing
Kaynak
Chinese Physics B
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
22
Sayı
7
