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Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures

In the present work, we perform molecular dynamics simulations corroborated by experimental validations to elucidate the underlying deformation mechanisms of single-crystalline aluminum under direct imprint using a rigid silicon master. We investigate the influence of crystallographic orientation on...

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Autores principales: Yuan, Ying, Zhang, Junjie, Sun, Tao, Liu, Cong, Geng, Yanquan, Yan, Yongda, Jin, Peng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385152/
https://www.ncbi.nlm.nih.gov/pubmed/25852392
http://dx.doi.org/10.1186/s11671-015-0788-4
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author Yuan, Ying
Zhang, Junjie
Sun, Tao
Liu, Cong
Geng, Yanquan
Yan, Yongda
Jin, Peng
author_facet Yuan, Ying
Zhang, Junjie
Sun, Tao
Liu, Cong
Geng, Yanquan
Yan, Yongda
Jin, Peng
author_sort Yuan, Ying
collection PubMed
description In the present work, we perform molecular dynamics simulations corroborated by experimental validations to elucidate the underlying deformation mechanisms of single-crystalline aluminum under direct imprint using a rigid silicon master. We investigate the influence of crystallographic orientation on the microscopic deformation behavior of the substrate materials and its correlation with the macroscopic pattern replications. Furthermore, the surface mechanical properties of the patterned structures are qualitatively characterized by nanoindentation tests. Our results reveal that dislocation slip and deformation twinning are two primary plastic deformation modes of single-crystalline aluminum under the direct imprint. However, both the competition between the individual deformation mechanisms and the geometry between activated dislocation slip systems and imprinted surface vary with surface orientation, which in turn leads to a strong crystallographic orientation dependence of the pattern replications. It is found that the (010) orientation leads to a better quality of pattern replication of single-crystalline aluminum than the (111) orientation.
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spelling pubmed-43851522015-04-07 Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures Yuan, Ying Zhang, Junjie Sun, Tao Liu, Cong Geng, Yanquan Yan, Yongda Jin, Peng Nanoscale Res Lett Nano Express In the present work, we perform molecular dynamics simulations corroborated by experimental validations to elucidate the underlying deformation mechanisms of single-crystalline aluminum under direct imprint using a rigid silicon master. We investigate the influence of crystallographic orientation on the microscopic deformation behavior of the substrate materials and its correlation with the macroscopic pattern replications. Furthermore, the surface mechanical properties of the patterned structures are qualitatively characterized by nanoindentation tests. Our results reveal that dislocation slip and deformation twinning are two primary plastic deformation modes of single-crystalline aluminum under the direct imprint. However, both the competition between the individual deformation mechanisms and the geometry between activated dislocation slip systems and imprinted surface vary with surface orientation, which in turn leads to a strong crystallographic orientation dependence of the pattern replications. It is found that the (010) orientation leads to a better quality of pattern replication of single-crystalline aluminum than the (111) orientation. Springer US 2015-02-28 /pmc/articles/PMC4385152/ /pubmed/25852392 http://dx.doi.org/10.1186/s11671-015-0788-4 Text en © Yuan et al.; licensee Springer. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Nano Express
Yuan, Ying
Zhang, Junjie
Sun, Tao
Liu, Cong
Geng, Yanquan
Yan, Yongda
Jin, Peng
Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
title Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
title_full Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
title_fullStr Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
title_full_unstemmed Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
title_short Crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
title_sort crystallographic orientation-dependent pattern replication in direct imprint of aluminum nanostructures
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385152/
https://www.ncbi.nlm.nih.gov/pubmed/25852392
http://dx.doi.org/10.1186/s11671-015-0788-4
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