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

Neval A. Cinel; Serkan Bütün; Ekmel Özbay

doi:10.1117/12.879139

11 February 2011 SILVER nano-cylinders designed by EBL used as label free LSPR nano-biosensors

Neval A. Cinel, Serkan Bütün, Ekmel Özbay

Proceedings Volume 7911, Plasmonics in Biology and Medicine VIII; 79111I (2011) https://doi.org/10.1117/12.879139
Event: SPIE BiOS, 2011, San Francisco, California, United States

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.

Citation Download Citation

Neval A. Cinel, Serkan Bütün, and Ekmel Özbay "SILVER nano-cylinders designed by EBL used as label free LSPR nano-biosensors", Proc. SPIE 7911, Plasmonics in Biology and Medicine VIII, 79111I (11 February 2011); https://doi.org/10.1117/12.879139

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