Morphological stability of thin films

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Description

The boundary element method for elastostatics is applied to a thin stability problem arising in solid state surface science. An aim of this work is to determine the morphology of Ge deposited on a Si substrate. Nonstandard boundary conditions at the material interface are used to model the epitaxially grown film. In addition to determining the deformed geometry, it is also necessary to compute the surface stress tensor. Although the surface displacement at the junction between the interface and the Si free surface is not differentiable, the hypersingular integral equation for surface stress can still be used. These techniques are ... continued below

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11 p.

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Gray, L.J.; Chisholm, M.F. & Kaplan, T. December 31, 1993.

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Description

The boundary element method for elastostatics is applied to a thin stability problem arising in solid state surface science. An aim of this work is to determine the morphology of Ge deposited on a Si substrate. Nonstandard boundary conditions at the material interface are used to model the epitaxially grown film. In addition to determining the deformed geometry, it is also necessary to compute the surface stress tensor. Although the surface displacement at the junction between the interface and the Si free surface is not differentiable, the hypersingular integral equation for surface stress can still be used. These techniques are described along with results from 2-D calculations.

Physical Description

11 p.

Notes

OSTI as DE96010636

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  • BETECH `93: boundary element technology conference, Vilamoura (Portugal), 9-11 Nov 1993

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  • Other: DE96010636
  • Report No.: CONF-9311341--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 242663
  • Archival Resource Key: ark:/67531/metadc670353

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  • December 31, 1993

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Jan. 19, 2016, 8:21 p.m.

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Gray, L.J.; Chisholm, M.F. & Kaplan, T. Morphological stability of thin films, article, December 31, 1993; Tennessee. (digital.library.unt.edu/ark:/67531/metadc670353/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.