In the field of Nanotechnology, FTIR is crucial for several reasons. First, it allows researchers to characterize nanomaterials at a molecular level, providing insights into their chemical composition and structure. This is particularly important for applications like drug delivery, where the interaction between nanoparticles and biological molecules must be well understood. Second, FTIR can be used to monitor the functionalization of nanomaterials, which is essential for tailoring their properties for specific applications.