کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
220797 463353 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computer simulation of electrochemical nanostructuring induced by supersaturation conditions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Computer simulation of electrochemical nanostructuring induced by supersaturation conditions
چکیده انگلیسی

First steps are taken towards computer simulation of the atomistic mechanism taking place during the supersaturation induced local metal deposition method, as developed by Schindler and coworkers [D. Hofmann, W. Schindler, J. Kirchner, Appl. Phys. Lett. 73 (1998) 3279]. Using a combination of stochastic Langevin dynamics (LD) and deterministic atom dynamics (AD), different results are observed depending on the model systems considered. For instance, when a profile of neutral diffusing species is used, atom dispersion over the whole electrode was found, whereas when charged species are introduced to the model system, a clear definite nucleation area was observed underneath the tip. The present computer simulations suggest that in the early stages of the process of cluster generation, the strong ion–ion repulsion may play an important role if the nanostructuring process is achieved in the nanosecond range. At the same time, a fast Co/Au surface mixing was observed in the top layer of the substrate in these short simulation times.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 607, Issues 1–2, 1 September 2007, Pages 10–16
نویسندگان
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