 Recent research suggests that certain types of impurities can be beneficial for the stability of superconductors. In particular, it was found that when impurities are arranged in a specific way, they can create protected regions where Cooper pairs remain intact even in the presence of disorder. This phenomenon is known as Anderson localization, and it is believed to occur when the impurities form a lattice structure that prevents the pairs from spreading out over the entire system. The researchers tested this theory by studying the behavior of superfluid helium, three under the influence of oriented columnar defects. They found that the impurities did indeed preserve the momentum of the Cooper pairs, thus creating protected regions. This discovery could have important implications for the development of robust superconductor materials. This article was authored by T. Kampinen, J. Risti, M. M. Volard, and others.