Microwave Seminar at The Department of Physics & Engineering, ITMO | 17 Jan 2022
Timecodes are below the abstract.
Dr. Alex Powell,
University of Exeter
Title: "3D microwave metamaterials via advanced manufacturing approaches"
Abstract: Metamaterials research has come on in leaps and bounds in the last two decades, but most experimental demonstrations have been limited to planar surfaces or extruded 2D shapes (e.g. a cylinder), and these geometrical constraints have meant that the physics inherent in truly 3D structures have been beyond the reach of experimental science. However, with the maturing of 3D printing and other advanced manufacturing technologies, this is rapidly changing. In this talk I will discuss the potential for some of these new fabrication routes and present several examples of 3D metamaterials: Firstly, I will discuss structures made from interlaced 3D meshes, which possess an extremely broadband longitudinal mode that could be a path to overcome the bandwidth limitations of typical metamaterials. Secondly I will look at meta-particles that produce spoof-plasmonic behaviour analogous to that found in plasmonic nanoparticles in a fully 3D shape for the first time. Finally I will discuss some more exotic geometries and novel fabrication routes to create structures that could previously only exist in simulations.
Main paper/arXiv, related to the seminar, and other references:
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0:00:00 Intro
0:01:23 Background
0:03:24 3D metamaterials
0:09:12 3D manufacturing approaches & challenges
0:15:55 My investigations: 3D interplaced meshes for broadband metamaterial behaviours
0:32:03 My investigations: 3D metallic microwave scatterers
0:48:51 Summary
0:49:56 Q&A
The Department of Physics and Engineering of ITMO University (Saint Petersburg, Russia) hosts online weekly seminars to discuss recent scientific achievements of researchers from all over the world with a wide audience. The topics include experimental (Optical seminar) and theoretical (Theoretical seminar) aspects of nanophotonics, solid-state physics, material science, as well as design and applications of radiofrequency structures and devices (Microwave seminar).
Upcoming and past events can be found at [ Ссылка ]
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