SILVER nano-cylinders designed by EBL used as label free LSPR nano-biosensors

Date
2011
Advisor
Instructor
Source Title
Proceedings of SPIE, Progress in Biomedical Optics and Imaging
Print ISSN
1605-7422
Electronic ISSN
Publisher
SPIE
Volume
7911
Issue
Pages
Language
English
Type
Conference Paper
Journal Title
Journal ISSN
Volume Title
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.

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Other identifiers
Book Title
Keywords
Biosensor, EBL, 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
Citation
Published Version (Please cite this version)