The Electron Matter Interaction (EMINT) group at DTU Nanolab

Observe, Manipulate, Measure

Any signal that we record with any electron microscopy technique originates from electron matter interactions: elastic and inelastic scattering of the beam electrons as they interact with the atoms in the sample, and/or with the electric and magnetic fields within and surrounding the sample. Therefore, images, diffraction patterns and spectra, are all manifestations of processes happening in materials, which we capture, analyze and interpret on the basis of physical models. Our goal is to quantify relevant physical parameters of our samples, and to push the boundaries of what we can learn and measure using electrons as probes. We also see the electron beam as an active agent, which we can use to manipulate materials in various ways. Controlled radiolysis may trigger beneficial reactions by enhancing or suppressing chemical pathways. Charging may turn into an opportunity to inject holes into a material and catalyze other reactions or activate new processes. Energy transfer from the beam may promote local transformations of materials. Often beam effects are considered a nuisance; for us at EMINT, they are an opportunity!



Marco Beleggia
DTU Nanolab
45 25 31 47