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Issue 5, 2016
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The elastic–plastic transition in nanoparticle collisions

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Abstract

When nanoparticles (NPs) collide with low velocities, they interact elastically in the sense that – besides their fusion caused by their mutual van-der-Waals attraction – no defects are generated. We investigate the minimum velocity, vc, necessary for generating defects and inducing plasticity in the NP. The determination of this elastic–plastic threshold is of prime importance for modeling the behavior of granular matter. Using the generic Lennard-Jones interaction potential, we find vc to increase strongly with decreasing radius. Current models do not agree with our simulations, but we provide a model based on dislocation emission in the contact zone that quantitatively describes the size dependence of the elastic–plastic transition.

Graphical abstract: The elastic–plastic transition in nanoparticle collisions

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Publication details

The article was received on 28 Aug 2015, accepted on 05 Oct 2015 and first published on 05 Oct 2015


Article type: Paper
DOI: 10.1039/C5CP05150A
Citation: Phys. Chem. Chem. Phys., 2016,18, 3423-3429
  • Open access: Creative Commons BY-NC license
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    The elastic–plastic transition in nanoparticle collisions

    E. N. Millán, D. R. Tramontina, H. M. Urbassek and E. M. Bringa, Phys. Chem. Chem. Phys., 2016, 18, 3423
    DOI: 10.1039/C5CP05150A

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