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<p>Grand Canonical Monte Carlo (GCMC) simulation is used to investigate the wetting behavior of xenon on planar surfaces of different surface energies. Graphite with energy well depth of 28&#xa0;K is used as the representative of strong surface and planar surfaces with well depth of 5.6, 7, 8, 10, 12 and 14&#xa0;K are used to represent weaker substrates. The surface strength has a strong effect on the wetting behavior, and the transitions from non-wetting to prewetting is observed with the increase in the surface strength. We also investigated the temperature dependence of the wetting behavior for temperatures in the range between 77 and 161&#xa0;K, below the boiling point of bulk xenon of 165&#xa0;K. The nonwetting transition is always observed in the case of the weakest substrate, while wetting is always observed for graphite for this temperature range. For the intermediate strength surfaces, we observe a transition from non-wetting to pre-wetting and finally to wetting when temperature is increased.</p>

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Effects of surface strength on adsorption isotherm and wetting transition of xenon

  • 期刊论文

  • 发表日期：

    2026年3月15日

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  • S. Tammanoi,
  • A. Wongkoblap,
  • D. D. Do

摘要

Grand Canonical Monte Carlo (GCMC) simulation is used to investigate the wetting behavior of xenon on planar surfaces of different surface energies. Graphite with energy well depth of 28 K is used as the representative of strong surface and planar surfaces with well depth of 5.6, 7, 8, 10, 12 and 14 K are used to represent weaker substrates. The surface strength has a strong effect on the wetting behavior, and the transitions from non-wetting to prewetting is observed with the increase in the surface strength. We also investigated the temperature dependence of the wetting behavior for temperatures in the range between 77 and 161 K, below the boiling point of bulk xenon of 165 K. The nonwetting transition is always observed in the case of the weakest substrate, while wetting is always observed for graphite for this temperature range. For the intermediate strength surfaces, we observe a transition from non-wetting to pre-wetting and finally to wetting when temperature is increased.