کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5348856 1503636 2015 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and analysis of anodic aluminum oxide films with continuously tunable interpore distances
ترجمه فارسی عنوان
آماده سازی و تجزیه و تحلیل فیلم های اکسید آلومینیوم آنوداییک با فاصله های مداوم قابل تنظیم
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
Nanoporous anodic aluminum oxides are often used as templates for preparation of nanostructures such as nanodot, nanowire and nanotube arrays. The interpore distance of anodic aluminum oxide is the most important parameter in controlling the periodicity of these nanostructures. Herein we demonstrate a simple and yet powerful method to fabricate ordered anodic aluminum oxides with continuously tunable interpore distances. By using mixed solution of citric and oxalic acids with different molar ratio, the range of anodizing voltages within which self-ordered films can be formed were extended to between 40 and 300 V, resulting in the interpore distances change from 100 to 750 nm. Our work realized very broad range of interpore distances in a continuously tunable fashion and the experiment processes are easily controllable and reproducible. The dependence of the interpore distances on acid ratios in mixed solutions was discussed through analysis of anodizing current and it was found that the effective dissociation constant of the mixed acids is of great importance. The interpore distances achieved are comparable to wavelengths ranging from UV to near IR, and may have potential applications in optical meta-materials for photovoltaics and optical sensing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 328, 15 February 2015, Pages 459-465
نویسندگان
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