Super-resolution experiments on Lamb waves using a single emitter

被引：18

作者：

Rupin, Matthieu ^{[1
,2
]}

Catheline, Stefan ^{[3
]}

Roux, Philippe ^{[4
]}

机构：

[1] ESPCI ParisTech, Inst Langevin, F-75005 Paris, France

[2] PSL Res Univ, CNRS, UMR 7587, F-75005 Paris, France

[3] Univ Lyon, LabTAU, INSERM, U1032, F-69424 Lyon, France

[4] Univ Grenoble 1, UMR 5275, Inst Sci Terre, F-38000 Grenoble, France

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 02期

关键词：

INVERSE FILTER; TIME-REVERSAL;

D O I：

10.1063/1.4906105

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we present super-resolution experiments from a single emission channel located in the far-field of an elastic metamaterial for Lamb waves. The experiment is performed in the kHz regime, with centimetric waves that are refocused numerically through cross-correlation computations. The originality of this approach lies in the direct link established between super-resolution results and the wavefield dispersion induced by a metamaterial made of long rods that are attached to a plate, and that behave as sub-wavelength resonators. We believe that such a clear origin of a far-field super-resolution experiment is of major interest for the design of a meta-lens for waves in plates. (C) 2015 AIP Publishing LLC.

引用

页数：5

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