Dr. Rosario A. Gerhardt is a professor of materials science and engineering at the Georgia Institute of Technology in Atlanta, GA, USA, where she has taught for the last 20 years. She was previously with the Center for Ceramics Research at Rutgers University in Piscataway, NJ and has also served as a visiting scientist to the NASA Marshall Space Flight Center in Hunstville, Alabama and the Center for Nanophase Materials Sciences at Oak Ridge National Laboratory in Oak Ridge, Tennessee. She received her D.Eng.Sc. in metallurgy and materials science from Columbia University in New York City under the guidance of Prof. A.S. Nowick. Prof. Gerhardt’s research interests include developing structure-processing-property relationships in all classes of materials. Over the years she has worked with ceramics, metals, polymers as well as composites in bulk, thin film and in nanostructure form. Most of her work has dealt with the electrical and microstructural characterization of materials using impedance and dielectric spectroscopy, microscopy via optical, SEM, TEM and AFM as well as x-ray and neutron scattering methods.