Sensitivity optimization of surface plasmon sensors for detection of intermediate layers

A sensitivity optimization method for the detection of an intermediate layer using a surface plasmon sensor is presented. The dependence of detection sensitivity on distance from the metal surface and the average refractive index over the sensing region are considered. Based on the calculated result...

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Bibliographic Details
Published inSensors and actuators. A. Physical. Vol. 173; no. 1; pp. 36 - 40
Main Author Watanabe, Koyo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2012
Subjects
Actuators
Effective refractive index
Mathematical analysis
Metal surfaces
Optimization
Plasmons
Refractive index
Refractivity
Sensors
Surface plasmon
Surface plasmon
Effective refractive index
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Summary:A sensitivity optimization method for the detection of an intermediate layer using a surface plasmon sensor is presented. The dependence of detection sensitivity on distance from the metal surface and the average refractive index over the sensing region are considered. Based on the calculated results, the sensitivity for detecting an intermediate layer in a multilayered sample is determined by varying the refractive index and thickness of each layer. It is shown that, in particular cases, controlling the refractive index and thickness increases the detection sensitivity. The proposed method is useful for designing multilayered samples.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2011.10.011