کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
611888 880687 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
As-placed contact angles for sessile drops
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
As-placed contact angles for sessile drops
چکیده انگلیسی

As-placed contact angle is the contact angle a drop adapts as a result of its placement on a surface. As expected, the as-placed contact angle, θAPθAP, of a sessile drop on a horizontal surface decreases with the drop size due to the increase in hydrostatic pressure. We present a theoretical prediction for θAPθAP which shows that it is a unique function of the advancing contact angle, θAθA, drop size, and material properties (surface tensions and densities). We test our prediction with published and new data. The theory agrees with the experiments. From the relation of the as-placed contact angle to drop size the thermodynamic equilibrium contact angle is also calculated.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 317, Issue 1, 1 January 2008, Pages 241–246
نویسندگان
, ,