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Facet-Facet Barrier on Surfaces: Proposal and Experimental Validation

Published online by Cambridge University Press:  11 February 2011

Hanchen Huang ,
C. H. Woo ,
H. L. Wei ,
S. J. Liu ,
X. X. Zhang ,
M. Altman  and
E. G. Wang
Hanchen Huang*
Affiliation:
Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180
C. H. Woo
Affiliation:
Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong
H. L. Wei
Affiliation:
Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong
S. J. Liu
Affiliation:
Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong
X. X. Zhang
Affiliation:
Department of Physics, Hong Kong University of Science and Technology, Hong Kong
M. Altman
Affiliation:
Department of Physics, Hong Kong University of Science and Technology, Hong Kong
E. G. Wang
Affiliation:
Institute of Physics, Chinese Academy of Science, Beijing.
*
* (E-mail: hanchen@rpi.edu)
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Abstract

Surface processing is generally kinetics limited. Migration barriers, both on flat surfaces and near steps, therefore are of crucial importance. In this paper, we describe a kinetic barrier that separates two neighboring facets on surfaces. The contrast of this concept relative to the conventional Ehrlich-Schwoebel barrier is shown through molecular dynamics/statics calculations on copper and aluminum. The effects of this new kinetic barrier are demonstrated through lattice Monte Carlo simulations. The predicted effects are in direct correspondence with validation experiments on copper and silver thin films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 749: Symposium W – Morphological and Compositional Evolution of Thin Films , 2002 , W18.7
Copyright
Copyright © Materials Research Society 2003

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References

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