کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
596854 1454055 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Disjoining properties of Ne and Ar on graphite surface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Disjoining properties of Ne and Ar on graphite surface
چکیده انگلیسی

The disjoining properties of the thin films of Ne and Ar, respectively, absorbed on graphite basal plane are presented. These properties are resolved down to a molecular scale by using molecular dynamics simulation (MD). First, it is first shown that there are a subtle difference between the disjoining pressure and the disjoining potential multiplied by the bulk liquid density. It is due to the difference between the normal pressure of the thin film and the pressure at the saturated state. As the film thickness decreases, the disjoining pressure in all cases increases exponentially and has only the positive values with no sign-change in curvature. The disjoining potential has negative values that decreases exponentially as the thickness decreases, and this trend corresponds to the state of complete wetting. Finally, the disjoining-pressure results obtained by MD are compared with those obtained from the Mean Field Theory. Significant discrepancies are shown for both the neon and argon cases when the effective film thickness decreases below about 10 molecular diameters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 317, Issues 1–3, 20 March 2008, Pages 679–686
نویسندگان
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