More information: Alan R. Bowman et al, Quantum-mechanical effects in photoluminescence from thin crystalline gold films, Light: Science & Applications (2024). DOI: 10.1038/s41377-024-01408-2 EPFL ...

Experiments verified a 7-fold helical wire strand for gold. The helical structure exists because it requires no crystal symmetry. A single strand of gold atoms was first observed to exist suspended in ...