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Simulation and Analysis Graphene Based Bio-chemical Sensor Using Localized Surface Plasmon Resonance

Tareh, Batool | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46404 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Faez, Rahim
  7. Abstract:
  8. One of the different sensing techniques for biosensors is based on surface plasmon resonance which provides high reliability and efficiency. In this project working operating principles of biosensors based on surface plasmon resonance will be examined. For investigation of sensing meachanism we assume that there an array consisting of alternating graphen ribbons which by applying light leads to an effective magnetic field coupling to the localized surface plasmon. The numerical calculations are based on the exact solution of Maxwell's equation using Fuorier Model Method and Matlab coding. In these calculations, the coefficients of transmission, reflection and absorption of light versus wavelength is calculated. These values change because of environment dielectric index alteration and it can be used to measure environment dielectric index change. In this project it is found that the reflection coefficient and sensitivity increases by increase of nano-ribbon width. Also the sensitivity increases with increase of Fermi level. Also it was seen that the curve of reflection coefficient versus resonance wavelength becomes narrower and the sensitivity goes up when two nano ribbons with different widths in a period will be used
  9. Keywords:
  10. Wavelength ; Reflection Coefficient ; Fermi Level ; Surface Plasmon Resonance ; Graphene Ribbon Arrays ; Graphene Ribbons Width

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