کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9670560 1450404 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microfabricated textured surfaces for super-hydrophobicity investigations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر سخت افزارها و معماری
پیش نمایش صفحه اول مقاله
Microfabricated textured surfaces for super-hydrophobicity investigations
چکیده انگلیسی
The natural hydrophobicity of surfaces can be enhanced if they are micro-textured. This is due to air trapped in the structure, which provides the deposited drop with a composite surface made of solid and air on which it is resting. Here, we give evidence for this effect using a forest of micro-pillars which allows us to control the micro structure density under the drop, and thus the degree of super-hydrophobicity. For this purpose, silicon wafers were firstly patterned by conventional photolithography techniques. After deposition of an aluminium layer, the samples were subjected to a deep reactive ion etching (DRIE) with the “Bosch process” in order to achieve high aspect ratios (⩾10). However, this state is not always the most stable situation for a drop on a hydrophobic surface: the drop can also fill up the microstructure. We have been able to observe these two super-hydrophobic states on our surfaces and to characterize advancing and receding contact angles for both of them.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microelectronic Engineering - Volumes 78–79, March 2005, Pages 100-105
نویسندگان
, , , , ,