High Performance Magnetic Iron Oxide Nanoparticles
Application
The surface charge of nanoparticles gives an indication of their colloidal stability. Nanoparticles having high positive and negative zeta potential show dispersion stability and as a result do not agglomerate on storage. Charge also determines the distribution of these particles in the body and is an important parameter affecting internalization of nanoparticles in their target cells. In one study, it has been reported that uncoated and pullulan-coated SPIONs are internalized into cells by different mechanisms, demonstrating surface-dependent particle endocytosis behavior.Description
Iron is an element that, in its bulk form, is used in such everyday settings as stair railings and the structural beams in cars or buildings. Iron is also present in water and in our bloodstream, where it helps to transport oxygen. Iron is one of the materials that we can use to make magnets due to the way electrons orbit each atom. And, as we all know, iron rusts when you combine iron and oxygen to form iron oxide. It turns out that nanoparticles of both iron and iron oxide can be quite useful. If iron is left in the rain it will rust, and rust is composed of iron oxide, a molecule that contains three atoms of iron and four atoms of oxygen. Like iron, iron oxide has magnetic properties. Iron has four unpaired electrons, whereas iron oxide has only two unpaired electrons. Because the unpaired electrons make a material magnetic, iron oxide is less magnetic than iron. Iron oxide is therefore called a paramagnetic material. The paramagnetic properties of iron oxide nanoparticles are not changed from the bulk material except that these tiny particles can go where larger particles never could.
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