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Alignment of Magnetic Nanorods in Solidifying Films
Author(s) -
Gu Yu,
Kornev Konstantin G.
Publication year - 2013
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201300224
Subject(s) - nanorod , materials science , drag , magnetic field , orientation (vector space) , viscosity , viscous liquid , magnetic moment , nanotechnology , condensed matter physics , mechanics , composite material , physics , geometry , mathematics , quantum mechanics
In this paper, the kinetics of ordering of an assembly of non‐interacting nanorods suspended in a solidifying liquid film is studied theoretically. Assuming random orientation of nanorods at the initial moment of time, the time needed for nanorods to align along the direction of an external magnetic field is estimated. In the solidifying films with exponentially increasing viscosity, the viscous drag significantly resists the nanorod alignment. Therefore, some nanorods might be quenched halfway to the equilibrium orientation even before complete solidification of the film. Different regimes of ordering have been revealed and classified and the criterion for the alignment of nanorods prior to the film solidification has been introduced.