SILVER nano-cylinders designed by EBL used as label free LSPR nano-biosensors
Date
2011Source Title
Proceedings of SPIE, Progress in Biomedical Optics and Imaging
Print ISSN
1605-7422
Publisher
SPIE
Volume
7911
Language
English
Type
Conference PaperItem Usage Stats
154
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Abstract
Localized Surface Plasmon Resonance (LSPR) is based on the electromagnetic-field enhancement of metallic nano-particles. It is observed at the metal-dielectric interface and the resonance wavelength can be tuned by the size, shape, and periodicity of the metallic nanoparticles and the surrounding dielectric environment. This makes LSPR a powerful candidate in bio-sensing. In the present work, the size and period dependency of the LSPR wavelength was studied through simulations and fabrications. The surface functionalization, that transforms the surface into a sensing platform was done and verified. Finally, the concentration dependency of the LSPR shifts was observed. All the measurements were done by a transmission set-up. The study is at an early stage, however results are promising. The detection of specific bacteria species can be made possible with such a detection method. © 2011 SPIE.
Keywords
BiosensorEBL
LSPR
Nano-cylinder
Silver
Biosensing
Detection methods
EBL
Field enhancement
Label free
Localized surface plasmon resonance
LSPR
Metal-dielectric interface
Metallic nanoparticles
Nano-biosensors
Nano-cylinder
Nanocylinders
Resonance wavelengths
Sensing platforms
Surface Functionalization
Cylinders (shapes)
Nanoparticles
Plasmons
Silver
Surface plasmon resonance
Biosensors