کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5425064 | 1395847 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Line energy, line tension and drop size
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The relation between drop radius, r, the force to move the three phase contact line and the advancing and receding contact angles θA and θR is studied. To keep the line energy (energy per 2Ïr, also named line tension) independent of r, the modified Young equation predicts that the advancing and receding contact angles, θA and θR, change considerably with r. As shown by many investigators, θA and θR change negligibly, if at all, with r. We quantify recent evidences showing that the line energy is a function of the Laplace pressure and show that this way the modified Young equation is correct and still θA and θR should hardly change with r. According to our model, the small surface deformation associated with the unsatisfied normal component of the Young equation results in higher intermolecular interactions at the three phase contact line which corresponds to a higher retention force. This time increasing effect is supported by recent experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 602, Issue 14, 15 July 2008, Pages L108-L111
Journal: Surface Science - Volume 602, Issue 14, 15 July 2008, Pages L108-L111
نویسندگان
Rafael Tadmor,