Abstract

Metamaterials---artificial  electromagnetic media that are structured on the subwavelength scale---were  initially suggested for the realisation of negative-index media, and later they  became a paradigm for engineering electromagnetic space and controlling  propagation of electromagnetic waves. However, applications of metamaterials in  optics are limited due to inherent losses in metallic element employed for the  realisation of artificial optical magnetism. Recently,  we observe the emergence of a new field of all-dielectric  resonant meta-optics aiming  at the manipulation of strong optically-induced electric  and magnetic Mie-type resonances in  dielectric and semiconductor nanostructures with relatively high refractive  index. Unique advantages of dielectric resonant nanostructures over their  metallic counterparts are low dissipative losses and the enhancement of both  electric and magnetic fields that provide competitive alternatives for plasmonic  structures including optical nanoantennas, efficient biosensors, passive and  active metasurfaces, and functional metadevices. This  talk will summarize the most recent advances in all-dielectric resonant  meta-optics including active nanophotonics as well as the recently emerged  fields of topological photonics and nonlinear metasurfaces.    

Biography

Yuri  Kivshar received a PhD degree in theoretical physics in 1984 from the Institute  for Low Temperature Physics and Engineering of the USSR Academy of Science  (Kharkov, Ukraine). From 1988 to 1993 he worked at several research centers in  USA, Spain, and Germany, and in 1993 he moved to Australia where he established  Nonlinear Physics Center at the Australian National University. His research  interests include nonlinear physics, metamaterials, and nanophotonics. He is  Fellow of the Australian Academy of Science, and Fellow of OSA, APS, and IOP. He  received several international awards including Pnevmatikos Prize in Nonlinear  Science (Greece), Lyle Medal (Australia), Lebedev Medal (Russia), The State  Prize in Science (Ukraine), Harrie  Massey Medal (UK), and Humboldt Research Award (Germany). Kivshar’s Google  Hirsch index is h=111.