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.
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.