Solid State Technology and Devices Seminar: Symmetry and Topology of Nano Structures

Seminar | September 13 | 1-2 p.m. | Cory Hall, The Hogan Room, 521

 Boubacar Kanté, Associate Professor, Electrical Engineering and Computer Sciences Departement, UC Berkeley

 Electrical Engineering and Computer Sciences (EECS)

During the last two decades, our ability to nanostructure materials has led to a better understanding of the role of electromagnetic multipoles in the control of light-matter interaction. I will discuss how the control of the symmetries and interactions between multipoles enables the construction unique electromagnetic composites. In the first part of the talk, I will discuss how the spectral overlap of multipoles of specific symmetries enables on demand electromagnetic materials parameters or enhanced sensors operated at exceptional points. In the second part of the talk, I will discuss how the band structure of periodic systems can exhibit topological effect at optical frequencies and unique optoelectronic devices that can be created.

 dadevera@berkeley.edu, 510-642-3214