ICAMS / Interdisciplinary Centre for Advanced Materials Simulation

ICAMS Members

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Dr. Sergei Starikov

Postdoctoral Researcher

Group: Atomistic simulation of mechanical behaviour
Department of Atomistic Modelling and Simulation

Ruhr-Universität Bochum
IC 02/727
Universitätsstr. 150
44801 Bochum
 
Tel. +49 234 32 25395
Email: Sergei Starikov

My mission:

(left) Atomistic simulation of a particle containing two grains: the surface emits point defects diffusing along GB. (right) Calculated bulk and GB self-diffusion in iron.
My current research is focused on study of bulk and grain boundary (GB) self-diffusion of atoms in bcc metals. I combine different models for comprehensive investigation of diffusion processes. In particular, large scale atomistic simulation of a spherical nanoparticle containing two grains allows us to determine principal characteristics of GB self-diffusion: free surface of the simulated particle naturally regulates formation and removal of point defects that govern diffusion along GB. In our recent article, we found that atomic self-diffusion in symmetric tilt GBs in iron is mostly driven by self-interstitial atoms. In contrast, in general GBs atoms diffuse predominantly via an exchange mechanism that does not involve a particular defect but is similar to diffusion in liquid. Most observed mechanisms lead to significant enhancement of self-diffusion along GBs as compared to diffusion in the bulk.

Research Interests:


Interatomic potential, phase transitions.

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Professional Experience

2007-2018 Researcher, JIHT, Moscow, Russia
from 2011 Visiting scientist, Argonne National Lab, USA

Education

2011, PhD, Condensed Matter Physics, MEPhI, Moscow, Russia
2007, Diplom, Radiophysics and Electroncis, Orenburg State University, Russia

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