Improving the performance of structure-embedded acoustic lenses via gradient-index local inhomogeneities

We investigate the use of graded inhomogeneities in order to enhance the focusing and collimation performance of structure-embedded acoustic metamaterial lenses. The type of inhomogeneity exploited in this study consists in axial symmetric exponential-like gradients of either material or geometric p...

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Bibliographic Details
Main Authors: H. Zhu, F. Semperlotti
Format: Article
Language:English
Published: Taylor & Francis Group 2015-01-01
Series:International Journal of Smart and Nano Materials
Subjects:
Online Access:http://dx.doi.org/10.1080/19475411.2015.1009192