Synchrotron infrared nanospectroscopy as a game changer in nanophotonics

Modern technological applications share a variety of common demands, especially the need for smaller functional devices operating with unprecedented data processing power. Hence, nanoscale devices for light traffic are promising candidates for that end. Therefore, a set of advances are required to drive research into real-world applications in this area, including disruptive advances in the available characterization tools. This work presents an overview on how synchrotron infrared nanospectroscopy has contributed to the progress of nanopho-tonics. Technique description, data processing, and recent studies highlight the uniqueness of the technique for accessing nano-optical phenomena in novel quantum materials.