Recent advances in metamaterials and metasurfaces

主讲人 (Speaker): Yuri Kivshar

主讲人单位 (Speaker's Institute): 澳大利亚国立大学

邀请人 (Invited by): 李朝红

时间 (Time): 星期五, 2018/11/23 - 15:00 to 16:30

地点 (Location): 珠海校区旅游楼102讲学厅

摘要 (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 control¬ling propagation of waves. However, applications of metamaterials in optics are limited due to inherent losses in metals 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 Mie-resonant meta-optics including active nanophotonics as well as the recently emerged fields of topological photonics and nonlinear metasurfaces.

主讲人简介 (Speaker's CV):

Prof. Kivshar is a world leader in nonlinear physics, nonlinear photonics, and physics of metamaterials known as one of the “Most Cited Scientists in Physics” (ISI: h=87 with 36931 citations, Google Scholar: h=105 with 52432 citations) who published many high-impact papers in Physical Review Letters (83 papers) and Nature-family journals (15 papers). The main contributions of Prof Kivshar to nonlinear physics and photonics include many pioneering results on nonlinear localized modes in optical systems, optical solitons and vortices, the study of localization in discrete systems and nonlinear effects in plasmonics and metamaterials. Many of his results have been summarized in 5 books, and his pioneering works on localization were highlighted in an invited article in Physics Today 57, 43 (2004) and three review papers in Rev. Mod. Phys. (IF=44.982)