Enhanced resolution of surface plasmon resonance sensor by using a coupled mode through bimetallic approach
- Enhanced resolution of surface plasmon resonance sensor by using a coupled mode through bimetallic approach
- 손주명; 정대용; 조성훈; 이택성; 김원목; 이경석
- surface plasmon resonance sensor; waveguide coupled mode; bimetallic approach; resolution
- Issue Date
- International conference on advanced materials and devices 2009
- , 214-214
- For early diagnosis of diseases and pathogen infection and rapid environmental monitoring, further enhancement in resolution of surface plasmon resonance (SPR) sensor is required to detect low-molecular-weight analytes down to a hundreds of Daltons and a trace level concentration of tens of femtomoles. It has been known that the conventional SPR sensor using a Au single layer has a limited resolution. Various configurations have been proposed and explored mainly focused on the way of sharpening the SPR reflectivity curve. In this study, we present a high resolution SPR sensor using a coupled mode between the surface plasmon and guided wave, and demonstrate that the resolution can be further enhanced by combining the bimetallic approach. Theoretical modeling has been carried out by solving Fresnel equations for a multilayer stack of metal-insulator-metal geometry and experimentally verified by analyzing the response to a sucrose solution with different concentration. "Grant from Center for Nanostructured Materials Technology (2009K000459)"
- Appears in Collections:
- KIST Publication > Conference Paper
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.