Extraordinary Sound Transmission through Density-Near-Zero Ultranarrow Channels

Abstract

We introduce the acoustic equivalent of 'supercoupling' by studying the anomalous sound transmission and uniform energy squeezing through ultranarrow acoustic channels filled with zero-density metamaterials. We propose their realization by inserting transverse membranes with a subwavelength period along the channel, and we prove a novel form of acoustic tunneling based on impedance matching and infinite phase velocity at the zero-density operation. We envision applications in sensing, noise control, cloaking and energy harvesting.

17 pages, 4 figures

References in corpus (7)

• Achieving transparency with plasmonic coatings
• Epsilon-Near-Zero (ENZ) Metamaterials and Electromagnetic Sources: Tailoring the Radiation Phase Pattern
• Dielectric Sensing in Epsilon-Near-Zero Narrow Waveguide Channels
• Transmission-Line Analysis of Epsilon-Near-Zero (ENZ)-Filled Narrow Channels
• Reflectionless Sharp Bends and Corners in Waveguides Using Epsilon-Near-Zero Effects
• Optical Tunneling through Arbitrarily-Shaped Plasmonic Channels and Sharp Bends
• Nonlinear Control of Tunneling Through an Epsilon-Near-Zero Channel

Cited by in corpus (26)

• Wavefront Modulation and Subwavelength Diffractive Acoustics with an Acoustic Metasurface
• 3D Single-port Labyrinthine Acoustic Metamaterial
• Broad-band acoustic hyperbolic metamaterial
• Origin of Negative Density and Modulus in Acoustic Metamaterials
• Constant-pressure sound waves in non-Hermitian disordered media
• Visco-thermal effects in acoustic metamaterials: from total transmission to total reflection and high absorption
• Three-dimensional acoustic double-zero-index medium with a Dirac-like point
• Non-Reciprocal Willis Coupling in Zero-Index Moving Media
• Double-zero-index structural waveguides
• Acoustic solitons in waveguides with Helmholtz resonators: transmission line approach
• Zero refractive index in space-time acoustic metamaterials
• Zero-index Weyl metamaterials
• A high-frequency homogenization approach near the Dirac points in bubbly honeycomb crystals
• Trapped air metamaterials for ultrasonic sub-wavelength imaging in water
• Bright and Gap Solitons in Membrane-Type Acoustic Metamaterials
• Crystalline Soda Can Metamaterial exhibiting Graphene-like Dispersion at subwavelength scale
• Perfect transmission invisibility for waveguides with sound hard walls
• Structure-Composition Correspondence in Crystalline Metamaterials for Acoustic Valley-Hall Effect and Unidirectional Sound Guiding
• Acoustic Birefringence via Non-Eulerian Metamaterials
• Scattering theory from artificial piezoelectric-like meta-atoms and molecules
• Non-Hermitian acoustic metamaterial for the complete control of sound by accessing the exceptional points
• Steerable sound transport in a 3D acoustic network
• Tunneling of Elastic Waves in a Tapered Waveguide
• Bending sound around sharp corners without using topological edge states
• Highly efficient anomalous refraction of airborne sound through ultrathin metasurfaces
• Elastic Waves Scattering without Conversion in Metamaterials with Simultaneous Zero Indices for Longitudinal and Transverse waves