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

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Size-dependent mechanical properties of molybdenum nanopillars

Cited 36 times inthomson ciCited 36 times inthomson ci
Title
Size-dependent mechanical properties of molybdenum nanopillars
Author
Kim, Ju-YoungGreer, Julia R.
Keywords
CRYSTAL PLASTICITY; STRAIN GRADIENTS; DEFORMATION; STRENGTH; SCALE; GOLD; FLOW
Issue Date
2008-09
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.93, no.10, pp.1 - 3
Abstract
We report the deformation behavior of single crystalline molybdenum nanopillars in uniaxial compression, which exhibits a strong size effect called the "smaller is stronger" phenomenon. We show that higher strengths arise from the increase in the yield strength rather than through postyield strain hardening. We find the yield strength at nanoscale to depend strongly on sample size and not on the initial dislocation density, a finding strikingly different from that of the bulk metal.
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DOI
10.1063/1.2979684
ISSN
0003-6951
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MSE_Journal Papers
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