Open AccessBroadband and broadangle extraordinary acoustic transmission through subwavelength apertures surrounded by fluids
Author(s) -
Sol CarreteroPalacios,
Alasdair Murray,
L. Martı́n-Moreno,
Alastair P. Hibbins
Publication year - 2014
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/16/8/083044
Subject(s) - physics , broadband , transmission (telecommunications) , optics , angle of incidence (optics) , sound transmission class , acoustics , telecommunications , computer science
Open Access journalWe present a mechanism for ultra-broadband transmission of acoustic waves through subwavelength hole arrays. Different fluids surrounding (or filling) the holes are considered, which allows tuning of the band of maximum transmission to different angles of incidence. For certain configurations, this band of total transmission may appear at very small incident angles, making the system 'invisible' to sound at almost normal incidence. Analytical expressions for the specific incident angle, and for maximum transmission at that angle, are provided for any fluid-system configuration.Spanish Ministry of Science and Innovatio
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