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Kinetics of surface enrichment: A molecular dynamics study

Journal of Chemical Physics, ISSN: 0021-9606, Vol: 133, Issue: 15, Page: 154901
2010
  • 6
    Citations
  • 0
    Usage
  • 16
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    6
    • Citation Indexes
      6
  • Captures
    16
  • Mentions
    1
    • References
      1
      • 1

Article Description

We use molecular dynamics to study the kinetics of surface enrichment (SE) in a stable homogeneous mixture (AB), placed in contact with a surface which preferentially attracts A. The SE profiles show a characteristic double-exponential behavior with two length scales: -, which rapidly saturates to its equilibrium value, and +, which diverges as a power-law with time (+ ∼ tθ). We find that hydrodynamic effects result in a crossover of the growth exponent from θ≃0.5 to θ≃1.0. There is also a corresponding crossover in the growth dynamics of the SE layer thickness. © 2010 American Institute of Physics.

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