Determination of the Optical Thickness of sub 10-nm Thin Metal Films by SPR Experiments

被引：15

作者：

Rehman, Saif-ur ^{[1
,2
]}

Rahmouni, Anouar ^{[1
]}

Mahfoud, Tarik ^{[1
]}

Nesterenko, Dmitry V. ^{[1
]}

Sekkat, Zouheir ^{[1
,2
,3
]}

机构：

[1] Moroccan Fdn Adv Sci Innovat & Res MAScIR, Opt & Photon Ctr, Rabat Design Ctr, Rabat 10100, Morocco

[2] Univ Mohammed V Agdal, Fac Sci, Rabat, Morocco

[3] Hassan II Acad Sci & Technol, Rabat, Morocco

来源：

PLASMONICS | 2014年 / 9卷 / 02期

关键词：

Surface plasmons; Thin films; Optical constants; Ultra-thin metal clusters; SURFACE-PLASMON RESONANCE; SPECTROSCOPY; CONSTANTS; SENSOR; SINGLE; WAVES;

D O I：

10.1007/s11468-013-9635-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We discuss the experimental data of surface plasmon resonance (SPR) occurring at the interface between air and single and bimetallic thin layers of Au and Ag prepared on glass substrates. The bilayer configuration allowed for the measurements of the optical constants of metallic films that are ultra thin; e.g., below 10 nm of thickness since SPR modes on such thin films in a single-layer configuration are shallow. We also discuss the effect of film thickness on SPR coupling. Thickness and refractive index of the films were determined by matching experimental SPR curves to the theoretical ones. Thickness and roughness of the films were also measured by atomic force microscopy. The results obtained by experimental measurements are in good agreement with AFM analysis.

引用

页码：381 / 387

页数：7

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