Ultrasonic transmission through multiple-sublattice subwavelength holes arrays.
The ultrasonic transmission through plates perforated with 2 × 2 or 3 × 3 square array of subwavelength holes per unit cell are studied by numerical simulations. Calculations are obtained by means of a theoretical model under the rigid-solid assumption. It is demonstrated that when the inter-hole distance within the unit cell is reduced, new transmission dips appear resulting from Wood anomalies that have influence on the second and the third order Fabry-Perot peak. When the inter-hole distance within the unit cell is reduced, the transmission spectrum of the multiple-sublattice holes arrays tends to the transmission spectrum of a plate perforated with only one hole in the unit cell.
Centro de Tecnologías Físicas, Unidad Asociada ICMM-CSIC/UPV, Edificio 8B Bloque K, Ciudad Politécnica de la Innovación, Universidad Politécnica de Valencia, 46022 Valencia, Spain.
Héctor
H
Estrada
Vicente
V
Gómez-Lozano
Antonio
A
Uris
Pilar
P
Candelas
Francisco
F
Belmar
Francisco
F
Meseguer
D008962:Models, Theoretical; D014465:Ultrasonics