TY - JOUR
T1 - Extensive tailorability of sound absorption using acoustic metamaterials
AU - Elayouch, A.
AU - Addouche, M.
AU - Khelif, A.
N1 - Publisher Copyright:
© 2018 Author(s).
PY - 2018/10/21
Y1 - 2018/10/21
N2 - We present an experimental demonstration of sound absorption tailorability, using acoustic metamaterials made of resonant cavities that take advantage of the inherent visco-thermal characteristics of air. As confirmed by numerical calculation, we particularly show that using quarter-wave-like resonators made of deep subwavelength slits allows a high confinement of the acoustic energy of an incident wave. This leads to enhance the dissipation in the cavities and, consequently, generates strong sound absorption, even over a wide frequency band. This paves the way for tremendous opportunities in acoustic comfort because of their potentially low density, low volume, broadband, and tailorable capabilities.
AB - We present an experimental demonstration of sound absorption tailorability, using acoustic metamaterials made of resonant cavities that take advantage of the inherent visco-thermal characteristics of air. As confirmed by numerical calculation, we particularly show that using quarter-wave-like resonators made of deep subwavelength slits allows a high confinement of the acoustic energy of an incident wave. This leads to enhance the dissipation in the cavities and, consequently, generates strong sound absorption, even over a wide frequency band. This paves the way for tremendous opportunities in acoustic comfort because of their potentially low density, low volume, broadband, and tailorable capabilities.
UR - http://www.scopus.com/inward/record.url?scp=85055163679&partnerID=8YFLogxK
U2 - 10.1063/1.5035129
DO - 10.1063/1.5035129
M3 - Article
AN - SCOPUS:85055163679
SN - 0021-8979
VL - 124
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 15
M1 - 155103
ER -