2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/227770A shape-dependent superconducting resonance can be expected when an energy level associated with the transverse motion in a wire passes through the Fermi surface. We show that the recently observed width-dependent increase of $T_c$ in ${\rm Al}$ and ${\rm Sn}$ nanowires is a consequence of this shape resonance effect.4 pages, 3 figuresSuperconductivityMaterials Sciencetext