Electrorheologically-Controlled
Drug Release

The electrorheological effect refers to the possibility of controlling the viscosity of a colloid system by applying an external electric field that can lead either to increased or decreased viscosity.

Changes of several orders of magnitude in viscosity can be reached and this effect could be practically utilized for controlled drug delivery. With proper design of nanoparticulate drug carriers, the motion behavior of drug particles or the viscosity of the carrying medium can be manipulated by applying a relatively low external electrical field generated by a small battery. This technology opens up many prospects for active control of drug delivery profiles with increased efficiency and specificity compared to many traditional formulation approaches.