Graphene-coated tungsten nanowires deliver unprecedented modulus and strength

Zhong-Wei Hu; Min Wang; Chao-Wei Guo; Zhi-Wei Shan; Ju Li; Wei-Zhong Han

doi:10.1080/21663831.2018.1553801

Graphene-coated tungsten nanowires deliver unprecedented modulus and strength

Zhong-Wei Hu
, Min Wang
, Chao-Wei Guo
, Zhi-Wei Shan
, Ju Li
, Wei-Zhong Han^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

Abstract

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. © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

Original language	English
Pages (from-to)	47-52
Number of pages	6
Journal	Materials Research Letters
Volume	7
Issue number	2
Online published	11 Dec 2018
DOIs	https://doi.org/10.1080/21663831.2018.1553801
Publication status	Published - 1 Feb 2019
Externally published	Yes

Funding

This work was supported by the National Key R&D Program of China (2017YFB0702301), the National Natural Science Foundation of China (51471128 and 51621063), and the 111 Project of China (BP2018008).

Research Keywords

fracture strength
graphene
size effect
W nanowires
Young’s modulus

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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abstract = "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{\textquoteright}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{\textquoteright}s modulus and the fracture strength show a strong size effect, resulting from the graphene-nanowire core–shell structure. {\textcopyright} 2018 The Author(s). Published by Informa UK Limited, trading as Taylor \& Francis Group.",

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AU - Hu, Zhong-Wei

AU - Wang, Min

AU - Guo, Chao-Wei

AU - Shan, Zhi-Wei

AU - Li, Ju

AU - Han, Wei-Zhong

PY - 2019/2/1

Y1 - 2019/2/1

N2 - 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. © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

AB - 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. © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

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KW - graphene

KW - size effect

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KW - Young’s modulus

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U2 - 10.1080/21663831.2018.1553801

DO - 10.1080/21663831.2018.1553801

M3 - RGC 21 - Publication in refereed journal

SN - 2166-3831

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EP - 52

JO - Materials Research Letters

JF - Materials Research Letters

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ER -

Graphene-coated tungsten nanowires deliver unprecedented modulus and strength

Abstract

Funding

Research Keywords

Publisher's Copyright Statement

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