Quantum Size Phenomena in Single-crystalline Bismuth Nanostructures
In their work they have shown experimentally and supported the statement theoretically that in ultra-narrow bismuth nanowires quantum size phenomena drives metal into insulating state. Quantum laws of microworld prohibit electric current, though it is still the same material! The phenomenon is of universal validity and should be taken into consideration in design of future generation of ultra-small nanoelectronic circuits.
The full text article is available at http://www.nature.com/articles/s41535-017-0017-8