Elongated micro-structures in magneto-sensitive elastomers: a dipolar mean field model
D. Romeis, V. Toshchevikov, M. Saphiannikova,
Volume: 12. Pages: 9364--9376
DOI: 10.1039/C6SM01798C
Published: 2016
Abstract
Based on a dipole model for the mutual magnetic interactions among
the magnetizable micro-particles in magneto-sensitive elastomers
we develop a mean field approach to describe the arrangement of these
particles into elongated micro-structures. If these micro-structures
are oriented parallel to an external magnetic field the present approach
provides an efficient calculation of the behavior of such samples{,}
which is a result of the interplay between micro-structure and shape
effects. Accordingly{,} we are able to draw comprehensive phase diagrams
for the resultant deformation and predict for very oblate samples
a discontinuous shape change in the presence of a homogeneous external
field.