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Vertically self-organized gold nanoparticles in amorphous alumina matrices

Published online by Cambridge University Press:  01 February 2011

Chunming Jin ,
Honghui Zhou ,
Wei Wei  and
Roger J. Narayan
Chunming Jin
Affiliation:
North Carolina State University, Materials Science and Engineering, 3030 Engineering Building I, 911 Partners Way, Raleigh, NC, 27695-7907, United States, 919-515-7219
Honghui Zhou
Affiliation:
[email protected], North Carolina State University, Materials Science and Engineering, 3030 Engineering Building I, 911 Partners Way, Raleigh, NC, 27695-7907, United States
Wei Wei
Affiliation:
[email protected], North Carolina State University, Materials Science and Engineering, 3030 Engineering Building I, 911 Partners Way, Raleigh, NC, 27695-7907, United States
Roger J. Narayan
Affiliation:
[email protected], North Carolina State University, Biomedical Engineering, 3030 Engineering Building I, 911 Partners Way, Raleigh, NC, 27695-7115, United States
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Abstract

In this study, self-organized growth of gold nanoparticles dispersed in amorphous alumina matrices was investigated. Au/Al2O3 multilayered structures were grown on silicon (001) substrates using pulsed laser deposition. Vertical ordering of particles was examined with cross-sectional transmission electron microscopy and image Fourier transformation. Self-organization of gold nanoparticles along the vertical direction was observed in the samples grown at room temperature and 320 °C. This process occurred through two-different growth modes, known as top-on-top growth and top-on-middle growth. The driving force for the vertical ordering was attributed to long-range elastic interactions among nanoparticles during the film deposition process.

Keywords

laser ablationthin filmnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 960: Symposium N – Self Assembly of Nanostructures Aided by Ion- or Photon-Beam Irradiation—Fundamentals and Applications , 2006 , 0960-N04-05
Copyright
Copyright © Materials Research Society 2007

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References

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