Light interacts with matter in various ways. CRS microscopy relies on a specific type of light-matter interaction known as Raman scattering. When light impinges on a molecule, it can inelastically scatter, meaning the molecule absorbs some energy and re-emits light at a slightly different frequency. This shift in frequency, known as the Raman shift, is unique to each molecule and acts as its spectral fingerprint. CRS microscopy leverages this principle...