Ultra-fast quenching of binary colloidal suspensions in an external magnetic field
Soft Condensed Matter
2015-05-13 v2 Materials Science
Abstract
An ultra-fast quench is applied to binary mixtures of superparamagnetic colloidal particles confined at a two-dimensional water-air interface by a sudden increase of an external magnetic field. This quench realizes a virtually instantaneous cooling which is impossible in molecular systems. Using real-space experiments, the relaxation behavior after the quench is explored. Local crystallites with triangular and square symmetry are formed on different time scales and the correlation peak amplitude of the small particles evolves nonmonotonically in time in agreement with Brownian dynamics computer simulations.
Keywords
Cite
@article{arxiv.0811.1498,
title = {Ultra-fast quenching of binary colloidal suspensions in an external magnetic field},
author = {Lahcen Assoud and Florian Ebert and Peter Keim and René Messina and Georg Maret and Hartmut Löwen},
journal= {arXiv preprint arXiv:0811.1498},
year = {2015}
}
Comments
4 pages, 4 figures