Academy of Mathematics and Systems Science, CAS
Colloquia & Seminars

Speaker:	Prof. Jun Zou，The Chinese University of Hong Kong
Inviter:
Title:	Resonance analysis of electromagnetic metasurfaces
Time & Venue:	2019.5.28 10:30-11:30 N913
Abstract:	In this talk we report some recent resonance analysis of electromagnetic metasurfaces. We consider the anomalous electromagnetic scattering by periodically distributed sub-wavelength plasmonic nanoparticles, and establish some quantitative representation of the field enhancement due to mixed collective plasmon resonances, which can be characterized by the spectra of periodic Neumann-Poincare type operators. Based on the far field analysis, we demonstrate the optical effect of the electromagnetic metasurface can be effectively approximated by a Leontovich boundary condition. These results confirm essential physical changes of metasurface at resonances mathematically.