Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101560
Title: Diffusion of single active-dipolar cubes in applied fields
Authors: Kaiser, M.
Martinez, Y.
Schmidt, A. M.
Sánchez, P. A.
Kantorovich, S. S.
Issue Date: 2020
Publisher: Elsevier B.V.
Citation: Diffusion of single active-dipolar cubes in applied fields / M. Kaiser, Y. Martinez, A. M. Schmidt, et al. — DOI 10.1016/j.molliq.2020.112688 // Journal of Molecular Liquids. — 2020. — Vol. 304. — 112688.
Abstract: “Active matter” refers to a class of out-of-equilibrium systems whose ability to transform environmental energy to kinetic energy is sought after in multiple fields of science and at very different length scales. At microscopic scales, an important challenge lies in overpowering the particles reorientation due to thermal fluctuations, especially in nano-sized systems, to create non-random, directed motion, needed for a wide range of possible applications. In this article, we employ molecular dynamics simulations to show that the diffusion of a self-propelling dipolar nanocube can be enhanced in a pre-defined direction with the help of a moderately strong applied magnetic field, overruling the effect of the thermal fluctuations. Furthermore, we show that the direction of diffusion is given by the orientation of the net internal magnetisation of the cube. This can be used to determine experimentally the latter in synthetically crafted active cobalt ferrite nanocubes. © 2020 Elsevier B.V.
Keywords: ACTIVE MATTER
MAGNETIC CUBES
MOLECULAR DYNAMICS
DIFFUSION
GEOMETRY
KINETIC ENERGY
KINETICS
ACTIVE MATTER
APPLIED MAGNETIC FIELDS
DIFFERENT LENGTH SCALE
ENVIRONMENTAL ENERGY
MAGNETIC CUBES
MOLECULAR DYNAMICS SIMULATIONS
OUT-OF-EQUILIBRIUM SYSTEMS
THERMAL FLUCTUATIONS
MOLECULAR DYNAMICS
URI: http://hdl.handle.net/10995/101560
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85079601453
PURE ID: 12231275
742177c6-c49f-4e3e-b51c-3211bb8b6967
ISSN: 1677322
DOI: 10.1016/j.molliq.2020.112688
metadata.dc.description.sponsorship: This research has been supported by the Russian Science Foundation grant no. 19-12-00209 . The authors also acknowledge support from the Austrian Research Fund (FWF), START-Projekt Y 627-N27 . Y.M. gratefully acknowledges a Doctoral Scholarship granted by the Deutscher Akademischer Austauschdienst (DAAD). A.M.S. acknowledges funding from DFG-SPP 1681 , grant number SCHM1747/10 . Computer simulations were performed at the Vienna Scientific Cluster (VSC-3).
RSCF project card: 19-12-00209
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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