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Compact Waveguide and Guided Beam Pattern Based on the Whispering-Gallery Mode of a Hollow Pillar in a Phononic Crystal Plate
- Source :
- Physical Review Applied, Physical Review Applied, 2018, 10 (3), pp.034010. ⟨10.1103/PhysRevApplied.10.034010⟩, Physical Review Applied, American Physical Society, 2018, 10 (3), pp.034010. ⟨10.1103/PhysRevApplied.10.034010⟩
- Publication Year :
- 2018
- Publisher :
- American Physical Society (APS), 2018.
-
Abstract
- International audience; We report on the experimental evidence of the guiding of the lowest order antisymmetric Lamb mode (A0) through a compact waveguide consisting of aligned hollow pillars in between a square-latticed array of solid pillars on a thin slab. We analyze both numerically and experimentally the guiding achievements and we highlight the role played by the whispering gallery mode of the hollow pillars. In particular, we highlight the evolution of the displacement field pattern behind the waveguide that we relate to the emission of a quadrupolar wave interacting with the surrounding solid pillars. We also show the asymmetric transmission of a compact waveguide based on the same mechanism.
- Subjects :
- Acoustic metamaterials
Materials science
Thin slab
Physics::Optics
General Physics and Astronomy
02 engineering and technology
01 natural sciences
law.invention
Physics::Fluid Dynamics
Crystal
Beam pattern
Optics
law
0103 physical sciences
010306 general physics
Antisymmetric relation
business.industry
Pillar
021001 nanoscience & nanotechnology
Mechanical & acoustical properties
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
Displacement field
Acoustic wave phenomena
Whispering gallery mode resonators
Whispering-gallery wave
0210 nano-technology
business
Waveguides
Waveguide
Subjects
Details
- ISSN :
- 23317019
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Physical Review Applied
- Accession number :
- edsair.doi.dedup.....0b649abfbe9110132783e1c651ae75a4