Philippe Tassin

Department of Applied Physics, Chalmers University of Technology

On Materials for Nanophotonics-Natural and Artificial

Abstract

I will give an overview of our work on natural and artificial materials for nanophotonics. The processing of information in electromagnetic devices is in essence limited by the materials from which they are made. For this reason, a search for new materials with interesting optical properties is ongoing. In the first part of my talk, I will discuss what are the optical properties we desire for nanophotonic applications and show that this is quite different for resonant metamaterials and for plasmonics. I will present a method to compare nanophotonic materials and I will present our results for traditional materials like noble metals as well as cutting-edge materials like graphene. Nevertheless, natural materials still don’t offer all the optical properties we desire. Therefore, we have developed a number of artificial materials with subwavelength patterned unit cells—also called metamaterials. I will briefly touch upon metamaterials with negative index of refraction and metamaterials with large group delay.



Date: 15/9/2015
Time:15:00 (coffee & cookies will be served at 00:00)
Place:FORTH Seminar Room 2