Hans-Benjamin Braun is currently Associate Professor for Theoretical Physics at University College Dublin (Ireland). After studies in Physics and Mathematics he received his diploma degree from the Unversity of Basel (Switzerland) and in 1991 he earned his PhD in Theoretical Physics at ETH in Zurich. After postdoctoral research at the Physics Department and the Center for Magnetic Recording Research at the University of California at San Diego he was awarded a NSERC International Fellowship to work at Simon Fraser University in Vancouver (Canada). Subsequently he returned to Switzerland to take up a position as Senior Scientist at the Paul Scherrer Institute (PSI). He joined the Faculty of the School of Physics at University College Dublin (UCD) in 2004, where he founded and leads the group in Condensed Matter Theory supported by the Science Foundation of Ireland. Prof. Braun developed the theory for nonuniform thermally activated magnetization reversal in nanowires which now forms the basis for the design of perpendicular magnetic recording media. Well before it was recognized experimentally, he theoretically predicted quasi one-dimensional behavior in magnetic nanowires and he introduced the now widely used notion of domain wall chirality. His work led to the prediction of the spontaneous emergence of spin currents in quantum spin chains, an effect that he and his collaborators subsequently observed via spin polarized neutron scattering. Furthermore he proposed and interpreted a series of experiments on nanolithographic arrays that led to the discovery of emergent monopoles in artificial spin ice together with colleagues from PSI and UCD. In addition to numerous publications in top research journals he also authored popular articles for the French and German versions of Scientific American and he holds two patents.