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Forces That Drive Self-Assembly of Ternary Epilayer on a Solid Surface

[+] Author Affiliations
Wei Lu, Dongchoul Kim

University of Michigan, Ann Arbor, MI

Paper No. IMECE2003-41024, pp. 803-807; 5 pages
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Electronic and Photonic Packaging, Electrical Systems and Photonic Design, and Nanotechnology
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Electronic and Photonic Packaging Division
  • ISBN: 0-7918-3714-9 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME


Experimental evidence has accumulated in the recent decade that nanoscale patterns can self-assemble on solid surfaces. This paper reports the development of a continuous phase field model that accounts for the self-assembly of a ternary monolayer. Coarsening due to phase boundary energy and refining due to surface stress competes, which determines the feature size and spatial ordering. A set of nonlinear diffusion equations couple the two concentration fields in the epilayer and the stress field in the substrate. Numerical simulations reveal the exciting possibility of controlling a nanoscale self-assembly process with designed pre-patterns.

Copyright © 2003 by ASME
Topics: Force , Self-assembly



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