Viscoelasticity of stepped interfaces
Author(s)
Demkowicz, Michael J.; Skirlo, Scott A.
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Using molecular dynamics modeling, we show that interfaces in sputter deposited Cu-Nb superlattices exhibit time-dependent elasticity, i.e., viscoelasticity, under shear loading. In the high temperature and small strain rate limit, the interfacial shear modulus approaches a value proportional to the density of steps in the interface. It may therefore be possible to tailor the low-frequency shear moduli of interfaces by controlling their step densities.
Date issued
2013-10Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of PhysicsJournal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Skirlo, S. A., and M. J. Demkowicz. “Viscoelasticity of Stepped Interfaces.” Appl. Phys. Lett. 103, no. 17 (2013): 171908. © 2013 AIP Publishing LLC
Version: Final published version
ISSN
00036951
1077-3118