کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5358936 | 1388240 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Wettability of ZnO: A comparison of reactively sputtered; thermally oxidized and vacuum annealed coatings
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
ⶠThe wettability of reactively sputtered ZnO, thermally oxidized Zn-ZnO and vacuum annealed ZnO coatings was studied by using various probe liquids. ⶠThe wettability studies demonstrated that reactively sputtered ZnO coatings were hydrophobic, whereas thermally oxidized Zn-ZnO and vacuum annealed ZnO coatings were superhydrophobic with static water contact angles of 110.3°, 158.5° and 155.2°, respectively. ⶠThe dynamic contact angle measurements indicated advancing and receding contact angles of 2° and 4°, respectively for thermally oxidized Zn-ZnO and vacuum annealed ZnO coatings. ⶠThe work of adhesion of water was very low for thermally oxidized Zn-ZnO coating (5.06 mJ/m2) when compared to reactively sputtered ZnO coating (90.41 mJ/m2). Superior hydrophobic properties of thermally oxidized Zn-ZnO coatings are attributed to nanorod cluster like morphology along with the presence of high fraction of micron scale air pockets. ⶠThe apparent surface free energy values for reactively sputtered ZnO, thermally oxidized Zn-ZnO and vacuum annealed ZnO coatings were 32.95, 23.21 and 18.78 mJ/m2, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 257, Issue 9, 15 February 2011, Pages 4410-4417
Journal: Applied Surface Science - Volume 257, Issue 9, 15 February 2011, Pages 4410-4417
نویسندگان
Harish C. Barshilia, N. Selvakumar, Nisha Pillai, L. Mayura Devi, K.S. Rajam,