The most recent Essential Science Indicator (ESI) fast breaking paper in Materials Science is a Feature Article published by Journal of Materials Chemistry in 2004. 

The article is by Etienne Dugent and colleagues from the University of Bordeaux, France, and reviews magnetic nanoparticle design for medical diagnosis and therapy. It focuses mainly on the design and synthesis of these magnetic carriers, as well as examining in vivo applications of magnetic nanoparticles as contrast agents for magnetic resonance imaging (MRI) or colloidal mediators for cancer magnetic hyperthermia. A special emphasis is made on cancer diagnosis and therapy. 
There is currently a growing interest in the research area of nanomaterials which involves communities of physicians, physicists, biologists, and chemists.
The authors comment that, "this paper is a part of the key to understanding why magnetic nanoparticles will surely take part in the struggle against cancer during the next few years." 

More information on the paper and an interview with the authors can be read on ESI's website.

ESI lists highly cited papers in 22 broad fields of science. The papers in these lists comprise the top 1% of papers in each field and each year. The lists are updated every two months. Fast breaking papers are identified by the largest percentage increase in citations in their respective fields from one bimonthly update to the next. They represent recent scientific contributions that are just beginning to attract the attention of the scientific community.