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Synthesis and Coating of Gold Nanoparticles by Sol-Gel Method on the Glass Surface

Sadeghi, Sadra | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47128 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Ghorbani, Mohammad; Dolati, Abolghasem
  7. Abstract:
  8. In this project, the goal is to form gold nanoparticles on glass surface using Sol-Gel method, to create the appropriate physical and optical properties. To reach this purpose, the main point is to form the stable gel as a network of nanoparticles on glass surface. After coating, physical properties, surface properties and morphology were investigated. To investigate the absorption rate, the optical spectrum reflex had been appeared through 500-550 nm using UV-Visible test. Also, to observe morphology, particle size and distribution on the surface, the thin films have been tested via FESEM. Using a polymer template for gold nanoparticles, the structure of nanoparticles optimized mainly. The extent of this structure optimization was tested on surface properties such as thin film resistivity. Moreover, the effect of different parameters like gold nanoparticles concentration, coating velocity, the number of coatings and time of coating in solution were measured on the thin film resistivity. The observations showed that increasing in nanoparticles concentration to 590 mgr/lit, the coating velocity to 10 cm/min, the number of coating to 10 times and the time of coating to 120 seconds will result in decrease in thin film resistivity. Finally, thin films were observed via FESEM
  9. Keywords:
  10. Gold Nanoparticle ; Surface Properties ; Sol-Gel Method ; Thin Film Resistivity ; Polymer Template

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