Hydrophobic/hydrophilic switching on zinc oxide micro-textured surface

Myo Tay Zar Myint, Nithin Senthur Kumar, Gabor Louis Hornyak, Joydeep Dutta*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

58 اقتباسات (Scopus)

ملخص

Switchable wettability of zinc oxide (ZnO) microrod coated surfaces was controlled in two different ways: (1) by physical geometry (surface coverage area S A : the area covered by solid) and (2) by irradiation with ultraviolet (UV) light followed by infrared (IR) or furnace heating. In the first approach, the threshold coverage area for achieving hydrophobic surfaces was found to be <40%, which is in good agreement with predicted values in the literature leading to a metastable Cassie-Baxter regime. The transformation of hydrophobic to hydrophilic surfaces was studied by alternating cycles of 3 h exposure to ultraviolet (λ peak ∼ 253 nm) light followed by 1 h of annealing or IR irradiation alone. Three different annealing temperatures (120 °C, 200 °C and 250 °C) were utilized. Results of this work can be applied for designing surfaces with controlled wettability.

اللغة الأصليةEnglish
الصفحات (من إلى)344-348
عدد الصفحات5
دوريةApplied Surface Science
مستوى الصوت264
المعرِّفات الرقمية للأشياء
حالة النشرPublished - يناير 1 2013
منشور خارجيًانعم

ASJC Scopus subject areas

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