This webinar will start with showing that nanocolumnar films can be manufactured by magnetron sputtering using the glancing angle deposition configuration. Then, various applications of these nanocolumnar films in several fields will be presented, namely in medicine (antibacterial coatings, bioelectrodes for electric stimulation, SERS substrates), energy (black metal coatings, nanostructured layers for perovskite solar cells, photo-induced self-cleaning surfaces) and aerospace industry (anti-multipactor coatings).