Monday, April 24, 2017 - 9:00am - 10:00am
George Schatz (Northwestern University)
This talk will overview the interplay between optics, plasmonics, and excitonics for systems that consist of arrays of gold, silver or aluminum nanoparticles in 1D, 2D and 3D. This will begin with a review of the use of classical electromagnetic theory to describe the optical properties of plasmonic particles of arbitrary shape, size and arrangement, and which leads to a variety of enhanced spectroscopies including surface enhanced Raman scattering.
Wednesday, November 2, 2016 - 2:00pm - 2:50pm
Miguel Bandres (Technion-Israel Institute of Technology)
Topological insulators are a phase of matter with an insulating bulk and conducting edges. A topological insulator is characterized by a bulk bandgap where topological gapless unidirectional edge states reside. These edge states are robust to any perturbation that does not close the bandgap. In this way, deformations of the system like disorder, strain, or imperfections have little effect on the transport of such topological edge modes.
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