Near-field characteristics and signal enhancement of super-resolution near-field structure disk with metal nanoparticles

被引：2
|
作者：
Li, JM [1 ]
Shi, LP [1 ]
Miao, XS [1 ]
Lim, KG [1 ]
Yang, HX [1 ]
Tan, PK [1 ]
Chong, TC [1 ]
机构：
[1] Data Storage Inst, Singapore 117608, Singapore
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2006年 / 45卷 / 2B期
关键词：
super-resolution near-field structure; finite-difference time-domain method; surface plasmon; evanescent fields; signal enhancement;
D O I：
10.1143/JJAP.45.1398
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this study, we focus on near-field characteristics and surface plasmon (SP) induced by uniform- and nonuniform-size Ag nanoparticles in the mask layers of super-resolution near-field structure (super-RENS). The finite-difference time-domain (FDTD) method is used to analyze scattering fields from the localized SPs of Ag nanoparticles. It has been found that the spatial extension of the evanescent field is very short along the thickness direction of the mask layers, and the three-dimensional coupling patterns of the evanescent fields from the nonuniform-size particles are the most irregular. The signal enhancement mechanism of a super-RENS disk is discussed.
引用
收藏
页码：1398 / 1400
页数：3
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