Characterization of magnetically driven colloidal microwheels and their fibrinolytic applications
Colloids carrying payloads of medication have become a popular drug delivery approach. Since it is not always possible to rely on blood circulation to distribute the colloids to the target site in the body, researchers seek to develop methods of controlling colloid movement. We advance the development of a magnetic system that moves colloids using a canted rotating magnetic field. Beads containing superparamagnetic iron oxide crystals assemble into wheel-like structures that rotate in alignment with the field and roll via wet friction along adjacent surfaces. These micro-wheels (μwheels) are ...