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Construction of a Characterization System for Plasmonic Nanoparticles

Arabahmadi, Ehsan | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48555 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Rashidian, Bijan
  7. Abstract:
  8. The purpose of this thesis is construction of a characterization system, for plasmonic nanoparticles. plasmonic nanoparticles are metallic particles in nanometer scale, which can confine the electromagnetic field, in their induced electric dipole, in a wide range of frequency. This optical property lead to many applications such as, medicine cancer therapy, controlled releasing of drugs, solar cells and interconnections in integrated photonic circuits.Since, optical properties are the most important properties of plasmonic nanoparticles, we need a system to characterize them optically. There are different ways of optical characterization, which need a common tools, including light sources, monochromator or spectrometer and sensitive photo-detectors. The implemented optical system in this project are two different light sources including tungsten-halogen and deuterium lamp, a Czerny turner monochromator and two sensitive photo-detectors including a photo-multiplier tube (PMT) and an avalanche photodiode (APD).This implemented system have a wavelength range of 400-1100 nanometers and resolution of about 1 nanometer. Optical power at output is from 1 to 20 micro-watt and detectivity of our photo-detector is in order of 10 photons per second
  9. Keywords:
  10. Monochromator ; Photodetector ; PLasmonic Structure ; Spectroscopy ; Plasmonic Nanoparticles ; Light Sources

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