near-field scanning optical microscopy (NSOM)

Near-field scanning optical microscopy (NSOM) is an advanced imaging technique that allows scientists to see very tiny details beyond the limits of traditional microscopes. It uses a tiny, specialized tip positioned extremely close to a sample's surface to emit or collect light, capturing optical information at a nanometer scale. By scanning this tip across the surface, NSOM creates high-resolution images of structures far smaller than visible light’s wavelength. This method is valuable in fields like nanotechnology and materials science, providing detailed insights into surfaces and structures at the molecular or atomic level.