A closed-form analytical model for single nanoshells

Author

Alam, Mehboob ; Massoud, Yehia

Author_Institution

Electr. & Comput. Eng. Dept., Rice Univ., Houston, TX, USA

Volume

5

Issue

3

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

265

Lastpage

272

Abstract

In this paper, we develop an accurate analytical closed-form model for the frequency resonance and scattering characteristics of single nanoshells. Nanoshells, dielectric spheres that are coated with noble metal, possess excellent tunability of their resonance frequency as a function of the relative sizes of the core and the thickness of the shell. Consequently, nanoshells offer much improved sensitivity, specificity, and cost-effectiveness in their applications. Simulation results show that our new closed-form model matches very closely with the exact solution for typical nanoshell configurations used in near-infrared applications.

Keywords

metals; nanostructured materials; optical properties; Mie theory; analytical closed-form model; dielectric spheres; frequency resonance; nanoshells; scattering characteristics; tunability; Analytical models; Dielectrics; Finite difference methods; Mie scattering; Nanostructures; Optical scattering; Particle scattering; Resonance light scattering; Resonant frequency; Time domain analysis; Mie theory; nanoshells; scattering;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2006.874050

Filename

1632146