Nanoscale magnetic domains have a central role in several biological and synthetic systems. Magnetic nanoparticles can be used as agents for cancer treatment or to stimulate different cell functions. Similarly, very small magnetic nanoparticles with a high anisotropy provide the opportunity for high-density data storage. These applications require the simultaneous imaging, detection and eventually separation of forces of different nature, for example mechanical and magnetic.
http://nanotechweb.org/cws/article/lab/45521