Galdi's research focuses on electromagnetic wave interactions with complex and engineered media, including
metamaterials, photonic quasicrystals, and space-time metastructures. His work spans non-Hermitian physics, aperiodically ordered media, and time-varying systems, with applications in wireless communication, sensing, and analog computing. demonstrating how metamaterials can perform mathematical operations and inspiring widespread theoretical and experimental advancements. •
Space-time modulated and chaotic metasurfaces: Developed new metastructures enabling direct physical-layer secure communication, integrated sensing and communications (ISAC), and nonreciprocal signal control, with implications for next-generation wireless systems. •
Photonic quasicrystals: Contributed to the understanding of bandgap formation, wave localization, and guided resonances in aperiodically ordered media. •
Non-Hermitian optics: Advanced the basic understanding of the complex interplay between gain and loss in engineered materials, leading to novel waveguiding mechanisms and spatial control strategies including non-Hermitian doping. •
LIGO experiment: Participated in the development of low-thermal-noise, high-reflectivity coatings for optical mirrors, critical to the sensitivity of the interferometers used in the first direct detection of gravitational waves. == Honors and Awards ==