Dissertation in the field of Radio Science and Engineering, Younes Ra'di
The title of thesis is Functional Metasurfaces
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In our everyday life, we observe different kinds of wave propagation phenomena, for waves of different nature, including mechanical and electromagnetic waves. Various wave propagation scenarios involve interactions between waves and materials. Depending on the structure of the medium through which a wave propagates, the wave-matter interactions can result in exciting effects. Properly controlling the wave-matter interactions, one can desirably manipulate electromagnetic waves propagating through a medium. In order to tailor electromagnetic waves in some special ways, we may need to engineer materials with constitutive parameters which are not readily available in nature. One may utilize subwavelength arrangements of structural elements, known as “metamaterials”, so as to artificially obtain unprecedented material properties. Electrically thin composite layers as two-dimensional versions of metamaterials are called metasurfaces. The main research field in this thesis deals with designing functional metasurfaces which enable control over the flow of electromagnetic waves through electrically thin planar structures. We believe that the findings of this thesis can open up new and exciting directions for research as well as enable new microwave and optical applications.
Opponent: Professor Stefano Maci, University of Siena, Italy
Supervisor: Professor Sergei Tretyakov, Aalto University School of Electrical Engineering, Department of Radio Science and Engineering
Contact information:
Younes Ra’di
tel +358 504205 848
younes.radi@aalto.fi