Document Detail


Surface segregation in TiO(2)-based nanocomposite thin films.
MedLine Citation:
PMID:  23150221     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The morphology of nanocomposites plays a pivotal role in understanding their functionality and determines their capabilities for applications. The use of nanocomposite coatings requires a study of the size effects on their functional properties. Noble metal nanoparticles are promising candidates for nanocomposite thin film applications due to their antibacterial, plasmonic and photocatalytic properties. In this contribution, the morphology of Ag-TiO(2) and Au-TiO(2) nanocomposite thin films has been investigated experimentally using electron tomography in transmission electron microscopy in combination with UV/vis spectroscopy. Based on the additional 3D information obtained from tomography, we propose a two-step model towards the observed bimodal particle size in these nanocomposite thin films prepared by co-sputtering from two different sources. Furthermore, we show that the optical properties exhibit a well-defined relation with the morphology of the nanocomposite thin films. The present investigations demonstrate the potential of electron tomography for revealing the complex structure and formation processes of functional nanocomposites.
Authors:
Venkata Sai Kiran Chakravadhanula; Christian Kübel; Tomislav Hrkac; Vladimir Zaporojtchenko; Thomas Strunskus; Franz Faupel; Lorenz Kienle
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-13
Journal Detail:
Title:  Nanotechnology     Volume:  23     ISSN:  1361-6528     ISO Abbreviation:  Nanotechnology     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  495701     Citation Subset:  -    
Affiliation:
Institute for Materials Science, Synthesis and Real Structure, Faculty of Engineering, Christian Albrechts University of Kiel, Kaiserstrasse 2, D-24143 Kiel, Germany.
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