Microwave seminar | 01 February 2021

In this talk, an overview on our activity on magnetic metasurfaces for Magnetic Resonance Imaging and resonant inductive Wireless Power Transfer applications is provided. In particular, the use of miniaturized spiral resonators to decouple MRI RF coils is presented. Attention is firstly directed to the spiral resonators electromagnetic characterization and then specific MRI test-cases are considered, from the basic theoretical aspects up to preliminary experimental validations carried out on fabricated prototypes. Then, bi-dimensional metasurfaces for resonant inductive Wireless Power Transfer are examined. Metasurfaces can produce an excellent WPT performance enhancement, as well as a reduced exposure in terms of Specific Absorption Rate which make them good candidates for biomedical applications and rechargeable devices. Finally, an overview on possible technological outcomes for MRI and WPT applications deriving from metasurfaces’ response control is discussed.