We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Durham University

GJ Russell Electron Microscopy Facility

Chemical Mapping

A unique advantage of electron microscopy is the ability to acquire different signals from the same region of interest at high spatial resolution. This includes, for example, the structure of the material and its chemical composition. Energy dispersive X-ray (EDX) in the SEM and TEM can not only identify the chemical elements present but also quantify their concentration. Furthermore electron energy loss spectroscopy (EELS), which has a higher energy resolution, provides additional information on atomic bonding as well as plasmons, dielectric constants etc.