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Understanding gold nanoisland formation using transport measurement

Author: Toyanath Joshi
Publisher: [Long Beach, California] : California State University, Long Beach, 2010.
Dissertation: M.S. California State University, Long Beach 2010
Series: California State University, Long Beach.; Master's thesis collection, Dept. of Physics and Astronomy.
Edition/Format:   Thesis/dissertation : Thesis/dissertation   Computer File : English
Summary:
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,  Read more...
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Details

Genre/Form: Academic theses
Material Type: Thesis/dissertation, Internet resource
Document Type: Book, Computer File, Internet Resource
All Authors / Contributors: Toyanath Joshi
ISBN: 9781124550053 1124550054
OCLC Number: 1051461032
Description: x, 80 leaves : illustrations, charts
Series Title: California State University, Long Beach.; Master's thesis collection, Dept. of Physics and Astronomy.
Responsibility: by Toyanath Joshi.

Abstract:

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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