Graphene-coated tungsten nanowires deliver unprecedented modulus and strength
Tungsten (W) nanowires have a wide range of chemical, electronic, and mechanical applications. However, the modulus and strength of traditional W nanowires are quite low, and how to improve their mechanical performance remains a challenge. Here, we describe a novel graphene-coated W nanowires that d...
| Main Authors: | , , , , , |
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| Format: | Article |
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Taylor & Francis
2019
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| Online Access: | https://hdl.handle.net/1721.1/121456 |
| _version_ | 1826189991798112256 |
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| author | Hu, Zhong-Wei Wang, Min Guo, Chao-Wei Shan, Zhi-Wei Li, Ju Han, Wei-Zhong |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Hu, Zhong-Wei Wang, Min Guo, Chao-Wei Shan, Zhi-Wei Li, Ju Han, Wei-Zhong |
| author_sort | Hu, Zhong-Wei |
| collection | MIT |
| description | Tungsten (W) nanowires have a wide range of chemical, electronic, and mechanical applications. However, the modulus and strength of traditional W nanowires are quite low, and how to improve their mechanical performance remains a challenge. Here, we describe a novel graphene-coated W nanowires that demonstrate a Young’s modulus of 885 GPa (twice that of W) and a fracture strength of up to 24.7 GPa (66% of the ideal strength). Both the Young’s modulus and the fracture strength show a strong size effect, resulting from the graphene-nanowire core–shell structure. Keywords: W nanowires; graphene; Young's modulus; fracture strength; size effect |
| first_indexed | 2024-09-23T08:33:21Z |
| format | Article |
| id | mit-1721.1/121456 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:33:21Z |
| publishDate | 2019 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | mit-1721.1/1214562022-09-23T12:53:24Z Graphene-coated tungsten nanowires deliver unprecedented modulus and strength Hu, Zhong-Wei Wang, Min Guo, Chao-Wei Shan, Zhi-Wei Li, Ju Han, Wei-Zhong Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Tungsten (W) nanowires have a wide range of chemical, electronic, and mechanical applications. However, the modulus and strength of traditional W nanowires are quite low, and how to improve their mechanical performance remains a challenge. Here, we describe a novel graphene-coated W nanowires that demonstrate a Young’s modulus of 885 GPa (twice that of W) and a fracture strength of up to 24.7 GPa (66% of the ideal strength). Both the Young’s modulus and the fracture strength show a strong size effect, resulting from the graphene-nanowire core–shell structure. Keywords: W nanowires; graphene; Young's modulus; fracture strength; size effect 2019-06-28T17:19:03Z 2019-06-28T17:19:03Z 2018-12 2018-07 2019-02-28T14:22:11Z Article http://purl.org/eprint/type/JournalArticle 2166-3831 https://hdl.handle.net/1721.1/121456 Hu, Zhong-Wei et al. “Graphene-Coated Tungsten Nanowires Deliver Unprecedented Modulus and Strength.” Materials Research Letters 7, 2 (December 2018): 47–52 © 2018 The Author(s) http://dx.doi.org/10.1080/21663831.2018.1553801 Materials Research Letters Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Taylor & Francis Taylor & Francis |
| spellingShingle | Hu, Zhong-Wei Wang, Min Guo, Chao-Wei Shan, Zhi-Wei Li, Ju Han, Wei-Zhong Graphene-coated tungsten nanowires deliver unprecedented modulus and strength |
| title | Graphene-coated tungsten nanowires deliver unprecedented modulus and strength |
| title_full | Graphene-coated tungsten nanowires deliver unprecedented modulus and strength |
| title_fullStr | Graphene-coated tungsten nanowires deliver unprecedented modulus and strength |
| title_full_unstemmed | Graphene-coated tungsten nanowires deliver unprecedented modulus and strength |
| title_short | Graphene-coated tungsten nanowires deliver unprecedented modulus and strength |
| title_sort | graphene coated tungsten nanowires deliver unprecedented modulus and strength |
| url | https://hdl.handle.net/1721.1/121456 |
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