Ultralarge elastic deformation of nanoscale diamond

Amit Banerjee^{1

2}, Daniel Bernoulli³, Hongti Zhang^{1

4}, Muk-Fung Yuen^{2

5}, Jiabin Liu¹, Jichen Dong⁶, Feng Ding^{6

7}, Jian Lu^{1

4}, Ming Dao⁸, Wenjun Zhang^{9

5}, Yang Lu^{10

2

4}, Subra Suresh¹¹

Affiliations

¹ Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.
² Centre of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong, China.
³ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
⁴ Centre for Advanced Structural Materials, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China.
⁵ Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.
⁶ Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
⁷ Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
⁸ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.
⁹ Centre of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong, China. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.
¹⁰ Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.
¹¹ Nanyang Technological University, Singapore 639798, Republic of Singapore. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.

PMID: 29674589
DOI: 10.1126/science.aar4165

Ultralarge elastic deformation of nanoscale diamond

Amit Banerjee et al. Science. 2018.

. 2018 Apr 20;360(6386):300-302.

doi: 10.1126/science.aar4165.

Authors

Affiliations

¹ Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.
² Centre of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong, China.
³ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
⁴ Centre for Advanced Structural Materials, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China.
⁵ Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.
⁶ Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
⁷ Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
⁸ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.
⁹ Centre of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong, China. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.
¹⁰ Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.
¹¹ Nanyang Technological University, Singapore 639798, Republic of Singapore. mingdao@mit.edu apwjzh@cityu.edu.hk yanglu@cityu.edu.hk ssuresh@ntu.edu.sg.

PMID: 29674589
DOI: 10.1126/science.aar4165

Abstract

Diamonds have substantial hardness and durability, but attempting to deform diamonds usually results in brittle fracture. We demonstrate ultralarge, fully reversible elastic deformation of nanoscale (~300 nanometers) single-crystalline and polycrystalline diamond needles. For single-crystalline diamond, the maximum tensile strains (up to 9%) approached the theoretical elastic limit, and the corresponding maximum tensile stress reached ~89 to 98 gigapascals. After combining systematic computational simulations and characterization of pre- and postdeformation structural features, we ascribe the concurrent high strength and large elastic strain to the paucity of defects in the small-volume diamond nanoneedles and to the relatively smooth surfaces compared with those of microscale and larger specimens. The discovery offers the potential for new applications through optimized design of diamond nanostructure, geometry, elastic strains, and physical properties.

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Comment in

On the quest for the strongest materials.
LLorca J. LLorca J. Science. 2018 Apr 20;360(6386):264-265. doi: 10.1126/science.aat5211. Science. 2018. PMID: 29674578 No abstract available.

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Ultralarge elastic deformation of nanoscale diamond

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Ultralarge elastic deformation of nanoscale diamond

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