A universal model of surface plasmon resonance characteristics for isotropic multilayer films

Author

Luo Xue-feng ; Han Li

Author_Institution

Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China

fYear

2010

fDate

28-30 Nov. 2010

Firstpage

263

Lastpage

266

Abstract

A theoretical model is presented for multilayered surface plasmon resonance sensors composed of isotropic materials. In the framework of optical transmission theory in multilayers, by solving Helmholtz equations, the expression of electromagnetic field distribution inside multilayered structures is established. This model is applied in the simulation of surface plasmon resonance characteristics of single Au layer, bilayer Co/Au and trilayer Au/Co/Au respectively. The calculated reflectivity curves are in excellent agreement with the experimental results. The simulated field distribution inside layered structures give an explicit explanation to the variations of reflectivity as a function of incident angle. Thus, the presented model can be used as an analytical tool in the format of SPR sensors.

Keywords

Helmholtz equations; cobalt; gold; light transmission; metallic thin films; optical multilayers; optical sensors; reflectivity; surface plasmon resonance; Co-Au; Helmholtz equations; SPR sensor; cobalt-gold bilayer; electromagnetic field distribution; gold-cobalt-gold trilayer; isotropic multilayer films; multilayered surface plasmon resonance sensor; optical transmission theory; reflectivity curve; surface plasmon resonance simulation; universal model; Films; Gold; Mathematical model; Nonhomogeneous media; Optical surface waves; Plasmons; Reflectivity; Surface plasmon resonance (SPR); electromagnetic model; multilayer structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Computing and Telecommunications (YC-ICT), 2010 IEEE Youth Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8883-4

Type

conf

DOI

10.1109/YCICT.2010.5713095

Filename

5713095