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

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      Author(s)
      Cinel, Neval A.
      Bütün, Serkan
      Özbay, Ekmel
      Date
      2011
      Source Title
      Proceedings of SPIE, Progress in Biomedical Optics and Imaging
      Print ISSN
      1605-7422
      Publisher
      SPIE
      Volume
      7911
      Language
      English
      Type
      Conference Paper
      Item 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
      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
      Permalink
      http://hdl.handle.net/11693/28410
      Published Version (Please cite this version)
      http://dx.doi.org/10.1117/12.879139
      Collections
      • Department of Electrical and Electronics Engineering 3702
      • Institute of Materials Science and Nanotechnology (UNAM) 1930
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