کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5021059 1369688 2018 9 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Controlled evolution of surface patterns for ZnO coated on stretched PMMA upon thermal and solvent treatments
کلمات کلیدی
Smart materials; Thin film; Surface properties; Heat treatment;
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Controlled evolution of surface patterns for ZnO coated on stretched PMMA upon thermal and solvent treatments
چکیده انگلیسی

Poly (methyl methacrylate) (PMMA) possesses the excellent optical properties and thermal stabilities, its shape memory effect can be triggered by heating or solvent absorption. Zinc oxide (ZnO) films, the most common semiconductor materials, were usually deposited on polymer substrates as a transparent conductive element for applications to electro-optical devices. In this paper, ZnO films with different thicknesses were deposited on PMMA substrates with different pre-strains. The influences of the shape memory effect (SME), thermal expansion mismatch, and ethanol soaking on the evolutions of surface topographies were systematically investigated. Results revealed that the isotropic wrinkles without any preferential orientation were induced by the thermal expansion coefficient mismatch between ZnO film and PMMA substrate during annealing. The well-aligned wrinkles perpendicular to the direction of pre-strain resulted from the SME of PMMA triggered by heating. In addition, cracks appeared instead of wrinkles since the isotropic swelling of PMMA upon soaking in ethanol.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 132, 1 January 2018, Pages 1-9
نویسندگان
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