Ultralarge elastic deformation of nanoscale diamond

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Amit Banerjee
  • Daniel Bernoulli
  • Hongti Zhang
  • Muk Fung Yuen
  • Jichen Dong
  • Feng Ding
  • Ming Dao
  • Subra Suresh

Detail(s)

Original languageEnglish
Pages (from-to)300-302
Journal / PublicationScience
Volume360
Issue number6386
Publication statusPublished - 20 Apr 2018

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, 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.

Citation Format(s)

Ultralarge elastic deformation of nanoscale diamond. / Banerjee, Amit; Bernoulli, Daniel; Zhang, Hongti; Yuen, Muk Fung; Liu, Jiabin; Dong, Jichen; Ding, Feng; Lu, Jian; Dao, Ming; Zhang, Wenjun; Lu, Yang; Suresh, Subra.

In: Science, Vol. 360, No. 6386, 20.04.2018, p. 300-302.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review