Professor Willie Padilla, Duke University

All-Dielectric Metamaterials as a Platform for Fundamental and Applied Science

Abstract: We demonstrate an all-dielectric metamaterial system based on a square array of cylindrical resonators. The metasurface architecture supports two dipole-active eigenmodes of opposite symmetry that may be tuned through modification of the geometry, or dynamically with external stimuli. Further, the 2D crystallographic space group and filling fraction may be modified to alter neighbor interactions of each mode, thus tuning their radiative loss rates independently. This versatile system is useful for exploration of a host of different classes of electromagnetic materials, and we present a few computational and experimental results.

Willie_PadillaAbout: Willie Padilla is a Professor in the Department of Electrical and Computer Engineering at Duke University. Willie received MS and PhD degrees in Physics from the University of California San Diego and was awarded a Director’s Postdoctoral Fellowship from Los Alamos National Laboratory. Dr. Padilla begin his Professorship in 2006, was promoted to Full Professor in 2013, and heads a group working in the area of artificially structured systems including active metamaterials with a focus on computational imaging, spectroscopy and energy. Professor Padilla has more than 180 peer-reviewed journal article, two book chapters and six issued patents. In 2007 he was awarded a Young Investigator Award from the Office of Naval Research and Presidential Early Career Award for Scientists and Engineers (PECASE) in 2011. In 2012 he was elected a Fellow of the Optical Society of America and a Kavli Frontiers of Science Fellow in 2013.