Armando Genco (Politecnico di Milano) Ultrafast dynamics of coherent exciton-polaritons in van der Waals semiconductor metasurfaces Abstract - Metasurfaces based on transition metal dichalcogenides (TMDs) have emerged as a promising platform for controlling light at the nanoscale due to their exceptional optical properties, including strong excitonic responses and intrinsically high refractive index. Unlike traditional dielectric metasurfaces,

Dr. Arthur D. Yaghjian (Electromagnetics Research) Robust Field-Based Antenna Quality Factor Abstract – New field-based quality factors Q(ω) are derived for antennas with known fields produced by an input current. These Q(ω) are remarkably robust because they equal the input-impedance bandwidth quality factor QZ(ω) when the input impedance is available. Like QZ(ω), the field-based Q(ω)