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Calculation of Elastic Bond Constants in Atomistic Strain Analysis

Strain analysis has significance both for tailoring material properties and designing nanoscale devices. In particular, strain plays a vital role in engineering the growth thermodynamics and kinetics and is applicable for designing optoelectronic devices. In this paper, we present a methodology for...

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Autores principales: Chen, Haiyuan, Wang, Juanjuan, Ashalley, Eric, Li, Handong, Niu, Xiaobin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4608958/
https://www.ncbi.nlm.nih.gov/pubmed/26474884
http://dx.doi.org/10.1186/s11671-015-1109-7
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author Chen, Haiyuan
Wang, Juanjuan
Ashalley, Eric
Li, Handong
Niu, Xiaobin
author_facet Chen, Haiyuan
Wang, Juanjuan
Ashalley, Eric
Li, Handong
Niu, Xiaobin
author_sort Chen, Haiyuan
collection PubMed
description Strain analysis has significance both for tailoring material properties and designing nanoscale devices. In particular, strain plays a vital role in engineering the growth thermodynamics and kinetics and is applicable for designing optoelectronic devices. In this paper, we present a methodology for establishing the relationship between elastic bond constants and measurable parameters, i.e., Poisson’s ratio ν and systematic elastic constant K. At the atomistic level, this approach is within the framework of linear elastic theory and encompasses the neighbor interactions when an atom is introduced to stress. Departing from the force equilibrium equations, the relationships between ν, K, and spring constants are successfully established. Both the two-dimensional (2D) square lattice and common three-dimensional (3D) structures are taken into account in the procedure for facilitating, bridging the gap between structural complexity and numerical experiments. A new direction for understanding the physical phenomena in strain engineering is established.
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spelling pubmed-46089582015-10-21 Calculation of Elastic Bond Constants in Atomistic Strain Analysis Chen, Haiyuan Wang, Juanjuan Ashalley, Eric Li, Handong Niu, Xiaobin Nanoscale Res Lett Nano Express Strain analysis has significance both for tailoring material properties and designing nanoscale devices. In particular, strain plays a vital role in engineering the growth thermodynamics and kinetics and is applicable for designing optoelectronic devices. In this paper, we present a methodology for establishing the relationship between elastic bond constants and measurable parameters, i.e., Poisson’s ratio ν and systematic elastic constant K. At the atomistic level, this approach is within the framework of linear elastic theory and encompasses the neighbor interactions when an atom is introduced to stress. Departing from the force equilibrium equations, the relationships between ν, K, and spring constants are successfully established. Both the two-dimensional (2D) square lattice and common three-dimensional (3D) structures are taken into account in the procedure for facilitating, bridging the gap between structural complexity and numerical experiments. A new direction for understanding the physical phenomena in strain engineering is established. Springer US 2015-10-16 /pmc/articles/PMC4608958/ /pubmed/26474884 http://dx.doi.org/10.1186/s11671-015-1109-7 Text en © Chen et al. 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Chen, Haiyuan
Wang, Juanjuan
Ashalley, Eric
Li, Handong
Niu, Xiaobin
Calculation of Elastic Bond Constants in Atomistic Strain Analysis
title Calculation of Elastic Bond Constants in Atomistic Strain Analysis
title_full Calculation of Elastic Bond Constants in Atomistic Strain Analysis
title_fullStr Calculation of Elastic Bond Constants in Atomistic Strain Analysis
title_full_unstemmed Calculation of Elastic Bond Constants in Atomistic Strain Analysis
title_short Calculation of Elastic Bond Constants in Atomistic Strain Analysis
title_sort calculation of elastic bond constants in atomistic strain analysis
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4608958/
https://www.ncbi.nlm.nih.gov/pubmed/26474884
http://dx.doi.org/10.1186/s11671-015-1109-7
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