Electromagnetic imaging using evanescent waves

被引：17

作者：

Grimberg, Raimond ^{[1
]}

Savin, Adriana ^{[1
]}

Steigmann, Rozina ^{[1
]}

机构：

[1] Natl Inst Res & Dev Tech Phys, Iasi 700050, Romania

来源：

NDT & E INTERNATIONAL | 2012年 / 46卷

关键词：

Eddy current; Evanescent wave; Image enhancement; Metamaterials; Metallic strip grating; NONDESTRUCTIVE EVALUATION; TRANSMISSION; TRANSDUCER; ARRAY;

D O I：

10.1016/j.ndteint.2011.11.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Metallic strip gratings have a range of applications, from printed circuits boards to filters in microwave domains. These applications impose a rigorous and rapid quality control. This paper proposes the obtaining of electromagnetic images of metallic strip gratings using evanescent waves that are formed in slits. For their detection, two procedures can be use, namely, the diffraction of evanescent waves on circular apertures and respectively, the propagation through metamaterials, conical Swiss rolls type. In this case, the spatial resolution is better than lambda/1000. The use of metamaterial, conical Swiss rolls type, allows the obtaining of a resolution in the range of lambda/2000, the electromagnetic image being improved. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：70 / 76

页数：7

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