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Understanding gold nanoisland formation using transport measurement

Autor Toyanath Joshi
Vydavatel: [Long Beach, California] : California State University, Long Beach, 2010.
Dizertace: M.S. California State University, Long Beach 2010
Edice: California State University, Long Beach.; Master's thesis collection, Dept. of Physics and Astronomy.
Vydání/formát:   Kvalifikační práce : Thesis/dissertation   Počítačový soubor : English
Shrnutí:
Abstract: Novel metal nano-clusters are always being an interest of scientists and researchers because of their unique optical and chemical properties. This thesis studies the formation mechanism of gold nanoisland film by studying transport properties. We used layer-by-layer self-assembled multilayer gold samples and annealed them at the temperature ranging from room temperature to 625°C. Transport properties,  Přečíst více...
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Detaily

Žánr/forma: Academic theses
Typ materiálu: Thesis/dissertation, Internetový zdroj
Typ dokumentu Kniha, Počítačový soubor, Internetový zdroj
Všichni autoři/tvůrci: Toyanath Joshi
ISBN: 9781124550053 1124550054
OCLC číslo: 1051461032
Popis: x, 80 leaves : illustrations, charts
Název edice: California State University, Long Beach.; Master's thesis collection, Dept. of Physics and Astronomy.
Odpovědnost: by Toyanath Joshi.

Anotace:

Abstract: Novel metal nano-clusters are always being an interest of scientists and researchers because of their unique optical and chemical properties. This thesis studies the formation mechanism of gold nanoisland film by studying transport properties. We used layer-by-layer self-assembled multilayer gold samples and annealed them at the temperature ranging from room temperature to 625°C. Transport properties, particularly the resistance and capacitance, were measured in situ during annealing and compared with the surface morphology and UV-vis studies. Five films of the 8-layer gold and one film of the 5-layer silver and 5-layer gold nanoparticle sequentially self-assembled samples were measured. Temperature dependent resistance curves were plotted and analyzed. From the resistance curves, we were able to identify the actual temperature for polymer evaporation and nanoisland formation. These data were re-verified by comparing them with the temperature dependent studies of surface morphology and UV-vis spectroscopy. The effect of measuring condition, like heating rate and pre-annealing time factor, was also analyzed. Particularly, the slow heating and long pre-annealing time effected nanoisland growth mechanism.

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