Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates
We propose a (1+1) -dimensional mesoscopic model to describe the most relevant physical processes that take place while depositing and/or annealing micro- and nanopatterned solid substrates. The model assumes that a collimated incident beam impinges over the growing substrate; scattering effects in...
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2006
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v73_n1_p_Castez http://hdl.handle.net/20.500.12110/paper_15393755_v73_n1_p_Castez |
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paper:paper_15393755_v73_n1_p_Castez2023-06-08T16:20:29Z Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates Computer simulation Diffusion Interfaces (materials) Random processes Rapid thermal annealing Relaxation processes Substrates Nanopatterned solid substrates Population dynamics Spatial structures Nanostructured materials We propose a (1+1) -dimensional mesoscopic model to describe the most relevant physical processes that take place while depositing and/or annealing micro- and nanopatterned solid substrates. The model assumes that a collimated incident beam impinges over the growing substrate; scattering effects in the vapor and reemission processes are introduced in a phenomenological way as an isotropic flow. Surface diffusion is included as the main relaxation process at the micro- or nanoscale. The stochastic model is built following population dynamics considerations; both stochastic simulations and the deterministic limit are analyzed. Numerical aspects regarding its implementation are also discussed. We study the shape-preserving growth mode, the coupling between shadowing effects and random fluctuations, and the spatial structure of noises using numerical simulations. We report important deviations from linear theories of surface diffusion when the interfaces are not compatible with the small slope approximation, including spontaneous formation of overhangs and nonexponential decay of pattern amplitudes. We discuss the dependence of stationary states with respect to the boundary conditions imposed on the system. © 2006 The American Physical Society. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v73_n1_p_Castez http://hdl.handle.net/20.500.12110/paper_15393755_v73_n1_p_Castez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Computer simulation Diffusion Interfaces (materials) Random processes Rapid thermal annealing Relaxation processes Substrates Nanopatterned solid substrates Population dynamics Spatial structures Nanostructured materials |
| spellingShingle |
Computer simulation Diffusion Interfaces (materials) Random processes Rapid thermal annealing Relaxation processes Substrates Nanopatterned solid substrates Population dynamics Spatial structures Nanostructured materials Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| topic_facet |
Computer simulation Diffusion Interfaces (materials) Random processes Rapid thermal annealing Relaxation processes Substrates Nanopatterned solid substrates Population dynamics Spatial structures Nanostructured materials |
| description |
We propose a (1+1) -dimensional mesoscopic model to describe the most relevant physical processes that take place while depositing and/or annealing micro- and nanopatterned solid substrates. The model assumes that a collimated incident beam impinges over the growing substrate; scattering effects in the vapor and reemission processes are introduced in a phenomenological way as an isotropic flow. Surface diffusion is included as the main relaxation process at the micro- or nanoscale. The stochastic model is built following population dynamics considerations; both stochastic simulations and the deterministic limit are analyzed. Numerical aspects regarding its implementation are also discussed. We study the shape-preserving growth mode, the coupling between shadowing effects and random fluctuations, and the spatial structure of noises using numerical simulations. We report important deviations from linear theories of surface diffusion when the interfaces are not compatible with the small slope approximation, including spontaneous formation of overhangs and nonexponential decay of pattern amplitudes. We discuss the dependence of stationary states with respect to the boundary conditions imposed on the system. © 2006 The American Physical Society. |
| title |
Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| title_short |
Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| title_full |
Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| title_fullStr |
Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| title_full_unstemmed |
Modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| title_sort |
modeling growth from the vapor and thermal annealing on micro- and nanopatterned substrates |
| publishDate |
2006 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v73_n1_p_Castez http://hdl.handle.net/20.500.12110/paper_15393755_v73_n1_p_Castez |
| _version_ |
1768546226071928832 |