Browsing by Author "Cinel, Neval A."

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    Plasmonic nano-bio sensors for detection of E-coli bacteria
    (IEEE, 2009) Cinel, Neval A.; Bütün, Serkan; Çalışkan, Deniz; Özbay, Ekmel
    Biological sensors, that rely on localized surface plasmon resonance exhibited by metallic nanocylinders fabricated using electron beam lithography and functionalized with the immobilization of biotin conjugated E-coli antibodies are investigated in this study.
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    Plasmonic nanoparticle based nanobiosensors and nanophotodetectors
    (SPIE, 2013) Cinel, Neval A.; Bütün, S.; Özbay, Ekmel
    Plasmonics mainly deals with light-matter interactions in metallic nanostructures. It has gathered interest since its discovery due to the benefits it provides when compared with photonics and electronics. It owes its popularity to the tremendous number of applications it serves for. In this paper, we review how plasmonic nanoparticles can be utilized in applications such as localized surface plasmon resonance based biosensing and enhancing performance of photodetectors. © 2013 SPIE.
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    SILVER nano-cylinders designed by EBL used as label free LSPR nano-biosensors
    (SPIE, 2011) Cinel, Neval A.; Bütün, Serkan; Özbay, Ekmel
    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.