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Dynamic wetting with two competing adsorbates.

Christian Gogolin1, Christian Meltzer, Marvin Willers

  • 1Fakultät für Physik und Astronomie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.

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|June 13, 2009
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Summary
This summary is machine-generated.

This study models two competing adsorbates on a substrate, observing droplet formation and slow coarsening. In 2+1 dimensions, a phase transition emerges, breaking symmetry and leading to metastable states.

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Area of Science:

  • Surface science
  • Statistical mechanics
  • Computational physics

Background:

  • Wetting phenomena involve adsorbate interactions on surfaces.
  • Competing adsorbates present complex dynamic behaviors.
  • Understanding phase transitions is crucial in condensed matter physics.

Purpose of the Study:

  • To investigate the dynamic properties of a wetting model with two competing adsorbates.
  • To analyze the formation and coarsening of droplets.
  • To explore the emergence of a phase transition in 2+1 dimensions.

Main Methods:

  • A dynamic model for wetting with two competing adsorbates.
  • Simulation of droplet formation and interface dynamics.
  • Analysis of phase transitions and critical properties in 2+1 dimensions.

Main Results:

  • Homogeneous droplets of each adsorbate form, separated by pinned nonwet regions.
  • The wet phase exhibits slow coarsening of competing droplets.
  • An emergent continuous phase transition line separates ordered and disordered phases, breaking symmetry and creating metastable states.

Conclusions:

  • The model demonstrates complex dynamics in competing adsorption systems.
  • A novel phase transition is identified in 2+1 dimensions.
  • Finite systems show metastability due to spontaneous symmetry breaking.