Walther Schwarzacher is a surface physicist whose research centres on nanoscale materials, electrochemical growth processes, and charge and spin transport in low-dimensional systems. His undergraduate and postgraduate degrees are from the University of Cambridge, and he spent many years at the University of Bristol, before moving to LUMS in 2024. A major theme of his work is the controlled fabrication of nanostructured metals and magnetic materials using electrodeposition, a versatile and cost-effective technique that enables precise tuning of composition, morphology, and layer thickness at the nanometre scale. He has investigated the physics of thin-film growth, including nucleation mechanisms, surface roughening, scaling behaviour, and the evolution of microstructure during deposition, contributing to the quantitative understanding of far-from-equilibrium growth processes. In magnetism, his studies of electrodeposited multilayers and nanoparticle assemblies have addressed magnetic interactions, anisotropy, and magnetotransport phenomena. Another significant strand of his research examines electron transport through single-molecule junctions, where he has used electrochemical control to probe metal–molecule interfaces and conductance switching behaviour. His most recent work is on ice nucleation by DNA origami.