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DOI	10.1126/science.aar4165
	Ultralarge elastic deformation of nanoscale diamond
	Banerjee A.; Bernoulli D.; Zhang H.; Yuen M.-F.; Liu J.; Dong J.; Ding F.; Lu J.; Dao M.; Zhang W.; Lu Y.; Suresh S.
发表日期	2018
ISSN	0036-8075
起始页码	300
结束页码	302
卷号	360 期号:6386
英文摘要	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, themaximum 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. © 2017 The Authors, some rights reserved.
英文关键词	diamond; brittle failure; computer simulation; diamond anvil cell; elasticity; hardness; physical property; polymer; tensile stress; theoretical study; anisotropy; Article; finite element analysis; geometry; high resolution transmission electron microscopy; molecular dynamics; nanoanalysis; priority journal; scanning electron microscopy; simulation; tensile strength; transmission electron microscopy
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242947
作者单位	Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong; Centre of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Centre for Advanced Structural Materials, Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, Hong Kong; Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong; Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, 44919, South Korea; Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; Nanyang Technological University, Singapore, 639798, Singapore
推荐引用方式 GB/T 7714	Banerjee A.,Bernoulli D.,Zhang H.,et al. Ultralarge elastic deformation of nanoscale diamond[J],2018,360(6386).
APA	Banerjee A..,Bernoulli D..,Zhang H..,Yuen M.-F..,Liu J..,...&Suresh S..(2018).Ultralarge elastic deformation of nanoscale diamond.Science,360(6386).
MLA	Banerjee A.,et al."Ultralarge elastic deformation of nanoscale diamond".Science 360.6386(2018).