AMADEus Seminar - Dr. Christos Argyropoulos - Thursday 17 may 2018 - 3:30 pm - CRPP (Amphi)le 17/05 à 15h30
College of Engineering, Electrical and Computer Engineering
University of Nebraska – Lincoln, USA
Metamaterials and metasurfaces as a new frontier in interdisciplinary material research
In the past fifteen years, the field of metamaterials has significantly evolved and matured. It has been established at the forefront of material research in several diverse areas, such as electromagnetics, acoustics, and mechanics. The interdisciplinary nature of metamaterial research is the key behind its currently successful status. Metamaterials and their two-dimensional counterparts, called metasurfaces, are artificially constructed structures able to exhibit novel functionalities not available in materials provided by nature. In my talk, I will focus on the presentation of electromagnetic metamaterials and metasurfaces that can tailor, enhance, control, and manipulate the electromagnetic radiation in unprecedented ways and at nanoscale regions. The large field enhancement in the vicinity of these systems due to localized or collective resonances ensures a significant boosting of different optical effects, ranging from optical nonlinearities to enhanced fluorescence, superradiance, and photoluminescence. In addition, the combination of metamaterials with the recently discovered 2D materials (graphene, MoS2, etc.) can lead to hybrid tunable planar devices with new intriguing functionalities.