Experimental determination of the principal dielectric functions in silver nanowire metamaterials

被引：42

作者：

Kanungo, Jyotirmayee ^{[1
]}

Schilling, Joerg ^{[1
,2
]}

机构：

[1] Queens Univ Belfast, Belfast BT7 1NN, Antrim, North Ireland

[2] ZIK SiLi Nano, D-06120 Halle, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 02期

关键词：

REFRACTION;

D O I：

10.1063/1.3462311

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The polarization dependent optical properties of silver nanowire arrays are investigated by angular resolved transmission measurements. The corresponding spectra show clear Fabry-Perot oscillations, which exhibit an unusual shift toward longer wavelengths for the extraordinary waves. From the peak shift both principal dielectric functions of the metamaterial are determined and compared with effective medium theories. Their different signs lead to a hyperbolic wave vector surface for the extraordinary waves and cause the observed peculiar peak shift. (C) 2010 American Institute of Physics. [doi:10.1063/1.3462311]

引用

页数：3

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