Perfect and broadband acoustic absorption in deep sub-wavelength structures for the reflection and transmission problems

2017 ◽  
Vol 141 (5) ◽  
pp. 3641-3641 ◽  
Author(s):  
Vicente Romero-García ◽  
Noé Jiménez ◽  
Vincent Pagneux ◽  
Jean-Philippe Groby
Keyword(s):  
Acoustic Absorption ◽  
Reflection And Transmission ◽  
Transmission Problems ◽  
Sub Wavelength

scholarly journals Limits of flexural wave absorption by open lossy resonators: reflection and transmission problems

2019 ◽  
Vol 21 (5) ◽  
pp. 053003 ◽  
Author(s):  
J Leng ◽  
F Gautier ◽  
A Pelat ◽  
R Picó ◽  
J-P Groby ◽  
...  
Keyword(s):  
Flexural Wave ◽  
Reflection And Transmission ◽  
Wave Absorption ◽  
Transmission Problems

scholarly journals Perfect and broadband acoustic absorption by critically coupled sub-wavelength resonators

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
V. Romero-García ◽  
G. Theocharis ◽  
O. Richoux ◽  
A. Merkel ◽  
V. Tournat ◽  
...  
Keyword(s):  
Acoustic Absorption ◽  
Sub Wavelength

Analysis of Reflection and Transmission Problems of Waves in Viscoelastic Anisotropic Media

2007 ◽  
Vol 50 (4) ◽  
pp. 1048-1057 ◽  
Author(s):  
Cai LIU ◽  
Zhi-Qi GUO ◽  
Bao-Jun YANG ◽  
Xiao-Huan WANG ◽  
Xuan FENG
Keyword(s):  
Anisotropic Media ◽  
Reflection And Transmission ◽  
Transmission Problems

Parabolas from Reconstructed Surfaces Observed in Convergent-Beam RHEED Patterns

1990 ◽  
Vol 48 (2) ◽  
pp. 398-399
Author(s):  
M. Gajdardziska-Josifovska
Keyword(s):  
Electron Microscopy ◽  
High Energy ◽  
Two Dimensional ◽  
High Energy Electron ◽  
Reflection And Transmission ◽  
Experimental Diffraction Pattern ◽  
Surface Resonance ◽  
Reconstructed Surfaces ◽  
Reflection Electron Microscopy ◽  
Convergent Beam

Parabolas have been observed in the reflection high-energy electron diffraction (RHEED) patterns from surfaces of single crystals since the early thirties. In the last decade there has been a revival of attempts to elucidate the origin of these surface parabolas. The renewed interest stems from the need to understand the connection between the parabolas and the surface resonance (channeling) condition, the latter being routinely used to obtain higher intensity in reflection electron microscopy (REM) images of surfaces. Several rather diverging descriptions have been proposed to explain the parabolas in the reflection and transmission Kikuchi patterns. Recently we have developed an unifying general treatment in which the parabolas are shown to be K-lines of two-dimensional lattices. Here we want to review the main features of this description and present an experimental diffraction pattern from a 30° MgO (111) surface which displays parabolas that can be attributed to the surface reconstruction.

Canalization of Sub-wavelength Images by Electromagnetic Crystals

PIERS Online ◽  
2005 ◽  
Vol 1 (1) ◽  
pp. 37-41 ◽  
Author(s):  
Pavel A. Belov ◽  
C. R. Simovski
Keyword(s):  
Electromagnetic Crystals ◽  
Sub Wavelength
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