title: Extraordinary acoustic transmission through a 1D grating with very narrow apertures.
abstract: Recently, there has been an increased interest in studying extraordinary optical transmission (EOT) through subwavelength aperture arrays perforated in a metallic film. In this Letter, we report that the transmission of an incident acoustic wave through a one-dimensional acoustic grating can also be drastically enhanced. This extraordinary acoustic transmission (EAT) has been investigated both theoretically and experimentally, showing that the coupling between the diffractive wave and the wave-guide mode plays an important role in EAT. This phenomenon can have potential applications in acoustics and also might provide a better understanding of EOT in optical subwavelength systems.
authors.affiliation: National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, People's Republic of China.
authors.forename: Ming-Hui
authors.initials: MH
authors.lastname: Lu
authors.forename: Xiao-Kang
authors.initials: XK
authors.lastname: Liu
authors.forename: Liang
authors.initials: L
authors.lastname: Feng
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Cheng-Ping
authors.initials: CP
authors.lastname: Huang
authors.forename: Yan-Feng
authors.initials: YF
authors.lastname: Chen
authors.forename: Yong-Yuan
authors.initials: YY
authors.lastname: Zhu
authors.forename: Shi-Ning
authors.initials: SN
authors.lastname: Zhu
authors.forename: Nai-Ben
authors.initials: NB
authors.lastname: Ming