Single-crystal nanowires made from niobium arsenide become more conductive as they get thinner, paving way for sub-2-nm chips
https://phys.org/news/2026-07-thinner-wires-faster-electrons-quantum.html "shrunk copper wires have massive resistance spikes, overcome replacing failing copper interconnects at nm-scale, enabling smooth electron flow along surfaces/ edges without scattering, at room-temperature... thermomechanical nanomolding forges with precise structural dimensions... handles structural imperfections well... sub-2-nanometer microchip interconnects, although arsenic toxicity may slow commercial viability"