Field-induced adsorption exclusion of particles from one-dimensional nanomagnets.

作者信息

Helseth L E

机构信息

Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore.

出版信息

J Colloid Interface Sci. 2007 Jan 15;305(2):226-8. doi: 10.1016/j.jcis.2006.09.065. Epub 2006 Sep 28.

DOI:10.1016/j.jcis.2006.09.065

PMID:17045599

Abstract

I study the adsorption of paramagnetic colloids to one-dimensional nanomagnets. It is found that in the absence of external magnetic fields the colloids tend to adsorb to the nanomagnet by arranging themselves in a nearly close-packed formation, whereas in an external field some of the colloids are repelled due to dipolar interactions. I develop a theory for this phenomenon and show that it is in agreement with experimental data.

摘要