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Approaching diamond’s theoretical elasticity and strength limits

Diamond is the hardest natural material, but its practical strength is low and its elastic deformability extremely limited. While recent experiments have demonstrated that diamond nanoneedles can sustain exceptionally large elastic tensile strains with high tensile strengths, the size- and orientati...

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Autores principales: Nie, Anmin, Bu, Yeqiang, Li, Penghui, Zhang, Yizhi, Jin, Tianye, Liu, Jiabin, Su, Zhang, Wang, Yanbin, He, Julong, Liu, Zhongyuan, Wang, Hongtao, Tian, Yongjun, Yang, Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892892/
https://www.ncbi.nlm.nih.gov/pubmed/31797924
http://dx.doi.org/10.1038/s41467-019-13378-w
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author Nie, Anmin
Bu, Yeqiang
Li, Penghui
Zhang, Yizhi
Jin, Tianye
Liu, Jiabin
Su, Zhang
Wang, Yanbin
He, Julong
Liu, Zhongyuan
Wang, Hongtao
Tian, Yongjun
Yang, Wei
author_facet Nie, Anmin
Bu, Yeqiang
Li, Penghui
Zhang, Yizhi
Jin, Tianye
Liu, Jiabin
Su, Zhang
Wang, Yanbin
He, Julong
Liu, Zhongyuan
Wang, Hongtao
Tian, Yongjun
Yang, Wei
author_sort Nie, Anmin
collection PubMed
description Diamond is the hardest natural material, but its practical strength is low and its elastic deformability extremely limited. While recent experiments have demonstrated that diamond nanoneedles can sustain exceptionally large elastic tensile strains with high tensile strengths, the size- and orientation-dependence of these properties remains unknown. Here we report maximum achievable tensile strain and strength of diamond nanoneedles with various diameters, oriented in <100>, <110> and <111> -directions, using in situ transmission electron microscopy. We show that reversible elastic deformation depends both on nanoneedle diameter and orientation. <100> -oriented nanoneedles with a diameter of 60 nm exhibit highest elastic tensile strain (13.4%) and tensile strength (125 GPa). These values are comparable with the theoretical elasticity and Griffith strength limits of diamond, respectively. Our experimental data, together with first principles simulations, indicate that maximum achievable elastic strain and strength are primarily determined by surface conditions of the nanoneedles.
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spelling pubmed-68928922019-12-06 Approaching diamond’s theoretical elasticity and strength limits Nie, Anmin Bu, Yeqiang Li, Penghui Zhang, Yizhi Jin, Tianye Liu, Jiabin Su, Zhang Wang, Yanbin He, Julong Liu, Zhongyuan Wang, Hongtao Tian, Yongjun Yang, Wei Nat Commun Article Diamond is the hardest natural material, but its practical strength is low and its elastic deformability extremely limited. While recent experiments have demonstrated that diamond nanoneedles can sustain exceptionally large elastic tensile strains with high tensile strengths, the size- and orientation-dependence of these properties remains unknown. Here we report maximum achievable tensile strain and strength of diamond nanoneedles with various diameters, oriented in <100>, <110> and <111> -directions, using in situ transmission electron microscopy. We show that reversible elastic deformation depends both on nanoneedle diameter and orientation. <100> -oriented nanoneedles with a diameter of 60 nm exhibit highest elastic tensile strain (13.4%) and tensile strength (125 GPa). These values are comparable with the theoretical elasticity and Griffith strength limits of diamond, respectively. Our experimental data, together with first principles simulations, indicate that maximum achievable elastic strain and strength are primarily determined by surface conditions of the nanoneedles. Nature Publishing Group UK 2019-12-04 /pmc/articles/PMC6892892/ /pubmed/31797924 http://dx.doi.org/10.1038/s41467-019-13378-w Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Nie, Anmin
Bu, Yeqiang
Li, Penghui
Zhang, Yizhi
Jin, Tianye
Liu, Jiabin
Su, Zhang
Wang, Yanbin
He, Julong
Liu, Zhongyuan
Wang, Hongtao
Tian, Yongjun
Yang, Wei
Approaching diamond’s theoretical elasticity and strength limits
title Approaching diamond’s theoretical elasticity and strength limits
title_full Approaching diamond’s theoretical elasticity and strength limits
title_fullStr Approaching diamond’s theoretical elasticity and strength limits
title_full_unstemmed Approaching diamond’s theoretical elasticity and strength limits
title_short Approaching diamond’s theoretical elasticity and strength limits
title_sort approaching diamond’s theoretical elasticity and strength limits
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892892/
https://www.ncbi.nlm.nih.gov/pubmed/31797924
http://dx.doi.org/10.1038/s41467-019-13378-w
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