BROWSE

Related Researcher

Author's Photo

Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

ITEM VIEW & DOWNLOAD

Statistics of Dislocation Slip Avalanches in Nanosized Single Crystals Show Tuned Critical Behavior Predicted by a Simple Mean Field Model

Cited 23 times inthomson ciCited 20 times inthomson ci
Title
Statistics of Dislocation Slip Avalanches in Nanosized Single Crystals Show Tuned Critical Behavior Predicted by a Simple Mean Field Model
Author
Friedman, NirJennings, Andrew T.Tsekenis, GeorgiosKim, Ju-YoungTao, MoleiUhl, Jonathan T.Greer, Julia R.Dahmen, Karin A.
Keywords
Critical behavior; Crystal size; Deformation rates; Dislocation slip; Mean field models; Metallic nanocrystals; Nano-sized; Power law exponent; Power-law; Scaling functions; Stress-dependent
Issue Date
2012-08
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.109, no.9, pp.1 - 5
Abstract
We show that slowly sheared metallic nanocrystals deform via discrete strain bursts (slips), whose size distributions follow power laws with stress-dependent cutoffs. We show for the first time that plasticity reflects tuned criticality, by collapsing the stress-dependent slip-size distributions onto a predicted scaling function. Both power-law exponents and scaling function agree with mean-field theory predictions. Our study of 7 materials and 2 crystal structures, at various deformation rates, stresses, and crystal sizes down to 75 nm, attests to the universal characteristics of plasticity.
URI
Go to Link
DOI
10.1103/PhysRevLett.109.095507
ISSN
0031-9007
Appears in Collections:
MSE_Journal Papers
Files in This Item:
000308134400011.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU