Acoustic imaging with a metamaterial Luneburg lens

The Luneburg lens is a spherically symmetrical gradient refractive index device with unique imaging properties. Its wide field-of-view and minimal aberration have led it to be successfully applied in microwave antennas. However, only limited realizations of this type of image formation have been dem...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2018-09, Vol.144 (3), p.1674-1674
Main Authors: Cummer, Steven, Xie, Yangbo, Fu, Yangyang, Li, Junfei, Jia, Zhetao, Shen, Chen, Xu, Yadong, Chen, Huanyang
Format: Article
Language:English
Online Access:Get full text
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Summary:The Luneburg lens is a spherically symmetrical gradient refractive index device with unique imaging properties. Its wide field-of-view and minimal aberration have led it to be successfully applied in microwave antennas. However, only limited realizations of this type of image formation have been demonstrated in acoustics. Here, we apply a new design method for scalable and self-supporting metamaterials to experimentally demonstrate Luneburg lenses for airborne ultrasound. Experimental imaging results are demonstrated.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.5067454