کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1681402 | 1010437 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relaxation of surface tracks on polycarbonate thin films induced by MeV heavy-ion impacts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In the present work, the relaxation behavior of nanometer-sized deformations produced by single ion impacts on the surface of monodisperse (Mw = 60,000 u) polycarbonate thin films was investigated at temperatures close to and below the glass transition. The relaxation functions for the length, height and width of the deformations were well described by a stretched exponential law, with characteristic relaxation times Ï strongly dependent on temperature. For T > 100 °C, the temperature dependence of Ï obeys a Vogel-Fulcher law, but for lower temperatures it becomes less steep and tends to an Arrhenius-type behavior.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 268, Issue 19, 1 October 2010, Pages 3080-3083
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 268, Issue 19, 1 October 2010, Pages 3080-3083
نویسندگان
R. Leal, C.T. Souza, M.R. da Silva, Z. Fakhraai, J.A. Forrest, R.M. Papaléo,