Paper Title
Controlled Drug Delivery using Magnetic Nano Particles

Polymer nanoparticles have been widely studied as particulate carriers in the pharmaceutical and medical fields, as they promise drug delivery due to their controlled- and sustained-release properties, ultra small size, and biocompatibility with tissue and cells. During the last two decades, several methods of preparing nanoparticles have been developed. Considering the particle formation methods i.e.a polymerization reaction, the originalmacromolecule or the preformed polymer,nanoparticles are classified into several groups. This article reviews the most important preparation methods, especially those that make use of natural polymers. Advantages and disadvantages will be presented to facilitate the selection of an appropriate method for producing nanoparticles and using them in related applications. Keywords - Drug Delivery; Nanoparticles; Preparation Methods