Spanish researchers developed a simple and inexpensive way to produce well-coated iron nanoparticles. The particles thus obtained present a much stronger magnetic response than any composite material produced up to now involving magnetic nanoparticles encapsulated in inorganic matrices, and the rich chemistry and easy functionalization of the silica outer surface make them promising materials for their application as magnetic carriers.
Researchers from the Martin Research Group at the University of Michigan have demonstrated they can precisely release individual drugs and bioactive molecules at desired points in time by using electrical stimulation of nanotubes.
FePt nanoparticles containing a near-equal atomic percentage of iron and platinum are an important class of artificial nanostructured magnetic nanomaterials. They range in size from 2 to 20 nm in diameter and their magnetic properties change drastically with their size.