The role of nanoparticle shapes and deterministic aperiodicity for the design of nanoplasmonic arrays

被引：52

作者：

Forestiere, Carlo ^{[1
,2
,4
]}

Miano, Giovanni ^{[4
]}

Boriskina, Svetlana V. ^{[1
,2
]}

Dal Negro, Luca ^{[1
,2
,3
]}

机构：

[1] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA

[2] Boston Univ, Photon Ctr, Boston, MA 02215 USA

[3] Boston Univ, Div Engn & Mat Sci, Boston, MA 02215 USA

[4] Univ Naples Federico II, Dept Elect Engn, I-80125 Naples, Italy

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 12期

关键词：

METAL NANOPARTICLES; OPTICAL-PROPERTIES; SCATTERING; RESONANCES; SPECTRA; LIGHT;

D O I：

10.1364/OE.17.009648

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we study the role of nanoparticle shape and aperiodic arrangement in the scattering and spatial localization properties of plasmonic modes in deterministic-aperiodic (DA) arrays of metal nanoparticles. By using an efficient coupled-dipole model for the study of the electromagnetic response of large arrays excited by an external field, we demonstrate that DA structures provide enhanced spatial localization of plasmonic modes and a higher density of enhanced field states with respect to their periodic counterparts. Finally, we introduce and discuss specific design rules for the engineering and optimization of field enhancement and localization in DA arrays. Our results, which we fully validated by rigorous Generalized Mie Theory (GMT) and transition matrix (T-matrix) theory, demonstrate that DA arrays provide a robust platform for the design of a variety of novel optical devices with enhanced and controllable plasmonic fields. (C) 2009 Optical Society of America

引用

页码：9648 / 9661

页数：14

共 33 条

[31] ELECTROMAGNETIC SCATTERING BY AN AGGREGATE OF SPHERES [J].