Stable, predictable 1D van der Waals metallic niobium sulfide nanotube heterostructures fabricated using table salt as a catalyst

https://phys.org/news/2025-11-table-salt-enables-metallic-nanotubes.html

"nanotubes only made from carbon (semiconductors/ semimetals) or boron nitride (insulating), so no true metallic nanotubes which can exhibit superconductivity/ magnetism... overcome, coaxing metal to wrap around carbon/ boron nitride nanotube template adding tiny salt amount during growth... favored forming 2 nested shells instead of 1 layer, stabilized by electrons hopping between layers, acting like atomic-sized capacitor... no dangling bonds, providing greater precision/ reliability at nanoscale... faster electronics"