Surface Stress of Metallic Nanoparticles Revisited

18 Pages Posted: 16 Aug 2019

See all articles by David Holec

David Holec

Montanuniversität Leoben - Department of Materials Science

Lukas Löfler

Montanuniversität Leoben - Department of Materials Science

Gerald A. Zickler

Montanuniversität Leoben - Institute of Mechanics

Dieter Vollath

NanoConsulting

Franz Dieter Fischer

Montanuniversität Leoben - Institute of Mechanics

Abstract

The surface energy has been one of the topics of atomistic research for nanoparticles in the last decades. However, the physical role of surface stress and its quantification have been a lot less an object of research. Assumptions for the surface stress, going back to the thermodynamic basis of continua, have been popular. As an example the surface stress (state) follows as derivatives of the surface energy with a rather "classical" evolution equation for the deformation energy. The current concept introduces a combination of atomistic modelling and continuum mechanics for a core-shell system. Considering crystalline gold nanoparticles with radii in the range of 1nm to 9 nm, a unique equation can be derived for the surface stress.

Keywords: Nanoparticles, Atomistic modelling, Deformation, Shape dependence, Surface energy, Surface stress

Suggested Citation

Holec, David and Löfler, Lukas and Zickler, Gerald A. and Vollath, Dieter and Fischer, Franz Dieter, Surface Stress of Metallic Nanoparticles Revisited. Available at SSRN: https://ssrn.com/abstract=3436383 or http://dx.doi.org/10.2139/ssrn.3436383

David Holec

Montanuniversität Leoben - Department of Materials Science

Leoben
Austria

Lukas Löfler

Montanuniversität Leoben - Department of Materials Science

Leoben
Austria

Gerald A. Zickler

Montanuniversität Leoben - Institute of Mechanics

Austria

Dieter Vollath

NanoConsulting

Germany

Franz Dieter Fischer (Contact Author)

Montanuniversität Leoben - Institute of Mechanics ( email )

Austria

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