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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
سخت افزارها و معماری
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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 78â79, March 2005, Pages 100-105
Journal: Microelectronic Engineering - Volumes 78â79, March 2005, Pages 100-105
نویسندگان
Mathilde Callies, Yong Chen, Frédéric Marty, Anne Pépin, David Quéré,