کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5369748 1388451 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Depletion potentials between colloids and patterned surfaces
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Depletion potentials between colloids and patterned surfaces
چکیده انگلیسی

Effective interactions between the hard-sphere colloids and the patterned substrates created by depositing one or more hemispheres on the structureless walls are studied. The deposition of only one hemispherical cap gives rise to a new global minimum of the depletion potential but the difference from the planar hard wall case is moderate. On the other hand, when the hemispherical caps form a periodic array, multiple overlaps of the excluded volumes lead to formation of deep global minimum of the depletion potential. In some cases this minimum is deeper than −10kBT and this is more than triple of the potential minimum for the structureless wall. We conclude that templated surfaces affect depletion potentials significantly. This effect will have a major impact even when the residual attractive/repulsive interactions are present.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 13, 30 April 2007, Pages 5802-5806
نویسندگان
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