TY - JOUR
T1 - Density-near-zero using the acoustically induced transparency of a Fano acoustic resonator
AU - Elayouch, A.
AU - Addouche, M.
AU - Farhat, Mohamed
AU - El-Amin, Mohamed
AU - Bagci, Hakan
AU - Khelif, A.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research leading to these results has received funding from the Region of Franche-Comté and financial support from the Labex ACTION program (Contact No. ANR-11-LABX-0001-01).
PY - 2017/1/5
Y1 - 2017/1/5
N2 - We report experimental results of near-zero mass density involving an acoustic metamaterial supporting Fano resonance. For this, we designed and fabricated an acoustic resonator with two closely coupled modes and measured its transmission properties. Our study reveals that the phenomenon of acoustically induced transparency is accompanied by an effect of near-zero density. Indeed, the dynamic effective parameters obtained from experimental data show the presence of a frequency band where the effective mass density is close to zero, with high transmission levels reaching 0.7. Furthermore, we demonstrate that such effective parameters lead to wave guiding in a 90-degrees-bent channel. This kind of acoustic metamaterial can, therefore, give rise to acoustic functions like controlling the wavefront, which may lead to very promising applications in acoustic cloacking or imaging.
AB - We report experimental results of near-zero mass density involving an acoustic metamaterial supporting Fano resonance. For this, we designed and fabricated an acoustic resonator with two closely coupled modes and measured its transmission properties. Our study reveals that the phenomenon of acoustically induced transparency is accompanied by an effect of near-zero density. Indeed, the dynamic effective parameters obtained from experimental data show the presence of a frequency band where the effective mass density is close to zero, with high transmission levels reaching 0.7. Furthermore, we demonstrate that such effective parameters lead to wave guiding in a 90-degrees-bent channel. This kind of acoustic metamaterial can, therefore, give rise to acoustic functions like controlling the wavefront, which may lead to very promising applications in acoustic cloacking or imaging.
UR - http://hdl.handle.net/10754/622891
UR - http://iopscience.iop.org/article/10.1209/0295-5075/116/46004/meta
UR - http://www.scopus.com/inward/record.url?scp=85010465392&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/116/46004
DO - 10.1209/0295-5075/116/46004
M3 - Article
SN - 0295-5075
VL - 116
SP - 46004
JO - EPL (Europhysics Letters)
JF - EPL (Europhysics Letters)
IS - 4
ER -