Speaker: Vladimir Konotop (Faculty of Sciences, University of Lisbon).

Abstract: Moiré lattices result from the superposition of identical or similar periodic structures rotated or shifted with respect to each other. They comprise special phases between strictly periodic and disordered media. I will describe the first experimental realization of optical moiré patterns which were used for the first demonstration of two-dimensional localization-delocalization transition of light beams. The experiment and the theory describing it prove possibility of two-dimensional localization in purely regular aperiodic potentials. 

Short bio: Professor of the Faculty of Sciences of the University of Lisbon since the end of the last century.