Sensors (Basel, Switzerland), 2010-12, Vol.10 (12), p.11390-11399
2010
Details
- Autor(en) / Beteiligte
- Titel
- Resolution enhancement in surface plasmon resonance sensor based on waveguide coupled mode by combining a bimetallic approach
- Ist Teil von
- Sensors (Basel, Switzerland), 2010-12, Vol.10 (12), p.11390-11399
- Ort / Verlag
- Switzerland: MDPI AG
- Erscheinungsjahr
- 2010
- Link zum Volltext
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- In this study, we present and demonstrate a new route to a great enhancement in resolution of surface plasmon resonance sensors. Basically, our approach combines a waveguide coupled plasmonic mode and a kind of Au/Ag bimetallic enhancement concept. Theoretical modeling was carried out by solving Fresnel equations for the multilayer stack of prism/Ag inner-metal layer/dielectric waveguide/Au outer-metal layer. The inner Ag layer couples incident light to a guided wave and makes more fields effectively concentrated on the outer Au surface. A substantial enhancement in resolution was experimentally verified for the model stack using a ZnS-SiO2 waveguide layer.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1424-8220eISSN: 1424-8220DOI: 10.3390/s101211390Titel-ID: cdi_doaj_primary_oai_doaj_org_article_40e3ece7443d4f10823a069d6ec92643
- Format
- –
- Schlagworte
- bimetallic approach, Biosensing Techniques - instrumentation, Geometry, Gold - chemistry, high resolution SPR sensor, Image Enhancement - instrumentation, Image Enhancement - methods, Light, Models, Biological, Models, Theoretical, Refractometry - instrumentation, Refractometry - methods, Sensors, Silver - chemistry, Sucrose, Surface Plasmon Resonance - instrumentation, Surface Plasmon Resonance - methods, Time Factors, waveguide coupled surface plasmon resonance