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Proceedings Paper

SILVER nano-cylinders designed by EBL used as label free LSPR nano-biosensors
Author(s): Neval A. Cinel; Serkan Bütün; Ekmel Özbay
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Paper Abstract

Localized Surface Plasmon Resonance (LSPR) is based on the electromagnetic-field enhancement of metallic nanoparticles. 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.

Paper Details

Date Published: 11 February 2011
PDF: 7 pages
Proc. SPIE 7911, Plasmonics in Biology and Medicine VIII, 79111I (11 February 2011); doi: 10.1117/12.879139
Show Author Affiliations
Neval A. Cinel, Bilkent Univ. (Turkey)
Serkan Bütün, Bilkent Univ. (Turkey)
Ekmel Özbay, Bilkent Univ. (Turkey)

Published in SPIE Proceedings Vol. 7911:
Plasmonics in Biology and Medicine VIII
Tuan Vo-Dinh; Joseph R. Lakowicz, Editor(s)

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