Ultralarge elastic deformation of nanoscale diamond

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Title
Ultralarge elastic deformation of nanoscale diamond
Author(s)
Amit Banerjee; Daniel Bernoulli; Hongti Zhang; Muk-Fung Yuen; Jiabin Liu; Jichen Dong; Feng Ding; Jian Lu; Ming Dao; Wenjun Zhang; Yang Lu; Suresh Suresh
Publication Date
2018-04
Journal
SCIENCE, v.360, no.6386, pp.300 - 302
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
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 (similar to 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 similar to 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
URI
https://pr.ibs.re.kr/handle/8788114/4563
ISSN
0036-8075
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Files in This Item:
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