A microwave wideband hyperlens based on metamaterials closed-rings

Author

Bin Zheng ; Weibin Zhang ; Yang Xu ; Hongsheng Chen

Author_Institution

Electromagn. Acad., Zhejiang Univ., Hangzhou, China

fYear

2012

fDate

8-10 Oct. 2012

Firstpage

1

Lastpage

3

Abstract

Hyperlens and superlens have been proven to overcome the “diffraction limit” to achieve subwavelength imaging. Previous works have done great performance, but they need one or more negative constitutive parameters, which are realized by metamaterials with resonance structures and can only work well for narrowband. In this letter, we design an improved microwave hyperlens which can be effective for a wideband using the metamaterials composed of closed-rings, with all the constitutive parameters positive. Both the simulation and experiment results show that we can use this kind of hyperlens to achieve subwavelength imaging with resolution up to 1/12 the vacuum wavelength.

Keywords

lenses; light diffraction; microwave metamaterials; optical metamaterials; diffraction limit; metamaterials closed-ring; microwave wideband hyperlens; negative constitutive parameter; resonance structure; subwavelength imaging; superlen; vacuum wavelength; Diffraction; Dispersion; Imaging; Metamaterials; Optical diffraction; Optical resonators; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Metamaterials (Meta), 2012 International Workshop on

Conference_Location

Nanjing

Print_ISBN

978-1-4673-2807-4

Type

conf

DOI

10.1109/META.2012.6464938

Filename

6464938