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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...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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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. |
format | Online Article Text |
id | pubmed-6892892 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
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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