PME Special Seminar: Koray Aydin, Northwestern University

Metasurfaces and metamaterials emerged as promising nanophotonic material and device platforms to control light-matter interactions at the nanoscale. In such materials, the collective and effective optical response is dictated by individual building blocks and controlled by the geometrical parameters forming the crystal structure.  In this talk, I will describe two bottom-up fabrication methods for optical metasurfaces and their applications. First, inverse design and 3D nano printing of compact, polymeric optical metasurfaces will be discussed. As an application area, I will demonstrate polarization splitters and metalenses operating at communication wavelengths. Then, I will introduce DNA-assembly of gold nanoparticles as a fabrication method to realize bottom-up, passive and active nanophotonic hybrid metamaterials and metasurfaces. I will highlight wide range of functional nanophotonic device architectures including epsilon-near-zero metasurfaces, negative index metamaterials and broadband absorber metafilms.

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