Magnetic colloids utilization

The above discussions have highlighted the utility of both magnetic arrays and colloidal-templated crystals for DNA electrophoresis. While the variety of solid supports that can be fabricated by these techniques is limited when compared to those available through micro- and nanofabrication, the ease with which these self-assembled arrays can be constmcted confers significant advantages... 

Xu, X., Friedman, G., Humfeld, K.D., Majetich, S.A., Asher, S.A. Synthesis and utilization of monodisperse superparamagnetic colloidal particles for magnetically controllable photonic... 

Iron metal is obtained by reduction with carbon as iron carbide. It is the least expensive and most widely used of all metals, primarily after conversion to steel, which is carbon-hardened iron. In addition to its uses in heavy construction (bridges, buildings, vehicles, armaments) [6] and because of its magnetic properties, a colloidal form of iron is extensively utilized in the manufacture of magnetic tapes and disks and other products. 

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