High sensing properties of magnetic plasmon resonance in the double-rod and tri-rod structures

被引：9

作者：

Cao, J. X. ^{[1
]}

Liu, H. ^{[1
]}

Li, T. ^{[1
]}

Wang, S. M. ^{[1
]}

Dong, Z. G. ^{[2
]}

Zhu, S. N. ^{[1
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 07期

基金：

中国国家自然科学基金;

关键词：

OPTICAL-PROPERTIES; SENSORS; NANOPARTICLES; METAMATERIALS; REFRACTION;

D O I：

10.1063/1.3481359

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We numerically investigated the magnetic plasmon resonances in the double-rod and tri-rod structures (DRSs and TRSs) for sensing applications. Like localized surface plasmon modes in nanostructures, the magnetic plasmon resonance wavelengths are sensitive to refractive index changes in the environment medium. The electromagnetic fields near DRSs and TRSs were much more localized in the dielectric surrounding the structures at the resonance wavelengths, which caused the linewidth of magnetic responses narrower. A large figure of merit could be obtained in the magnetic plasmon modes of DRSs and TRSs, which enables the use of the structures as sensing elements with remarkable performance. (C) 2010 American Institute of Physics. [doi:10.1063/1.3481359]

引用

页数：3

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