Beam techniques as a research area encompass experimental methods that use collimated beams of particles or radiation—such as ions, electrons, neutrons, photons, or neutral atoms—to probe, manipulate, or modify matter with high spatial, temporal, and energy resolution. They include approaches like ion-beam analysis, electron-beam microscopy, neutron scattering, and photon-beam spectroscopy, enabling precise characterization of structural, electronic, and magnetic properties at surfaces, interfaces, and bulk phases. Research in beam techniques involves development of advanced sources, optics, detectors, and interaction models, as well as optimization of beam–matter coupling to enhance sensitivity, selectivity, and quantification in materials science, chemistry, condensed-matter physics, and related disciplines.