Imaging of subwavelength light localization in all-dielectric complex nanostructures

This thesis work is located within the framework of light localization in all-dielectric nanostructures, from single Mie resonators to correlated disordered media. The application of groundbreaking imaging techniques like Near-field and Dark-field hyperspectral imaging on such complex architectures, is here proven to be a fascinating tool not only for the optical characterization, extremely important to understand their fundamental physical properties, but also an efficient vehicle for probing their practical potentialities. The presented experimental results are carefully supported by theory and numerical calculations.