Scattering from dilute ferrofluid suspensions in soft polymer gels
Materials Science
2014-07-17 v1 Mesoscale and Nanoscale Physics
Abstract
Small angle neutron and x-ray scattering methods are used to investigate the structure of dilute suspensions of two different ferrofluid systems dispersed in soft polyacrylamide hydrogels. It is found that the particles in the fluid are fractal aggregates composed of smaller particles of radius ca. 5 nm. The fractal dimension is strongly dependent on sample, taking the value 1.7 in the first sample and 2.9 in the second sample. In the presence of a magnetic field the aggregates orient, but are restricted in both their translational and rotational freedom. The effect of the gel elasticity is treated as a hindrance to the orientation process.
Cite
@article{arxiv.1407.4195,
title = {Scattering from dilute ferrofluid suspensions in soft polymer gels},
author = {Alvaro V. N. C. Teixeira and Isabelle Morfin and Françoise Ehrburger-Dolle and Cyrille Rochas and Erik Geissler and Pedro Licinio and Pierre Panine},
journal= {arXiv preprint arXiv:1407.4195},
year = {2014}
}
Comments
7 pages, 6 figures