A chain of copper and carbon atoms may be the thinnest metallic wire

https://phys.org/news/2024-06-chain-copper-carbon-atoms-thinnest.html

"1-D nanowires/ nanotubes... alternative to difficult to manufacture/ control carbon nanotubes... held together by van der Waals forces... CuC2 stable at 0 K, thinnest straight-line chain metallic nanowire... exfoliated requiring little energy from any of 3 parent crystals, its chain bendable while preserving metallic properties, helpful for flexible electronics... also, semi-metal Sb2Te2 excitonic insulator where quantum phenomena becomes visible at macroscopic scale... microelectronics, biosensors, catalysis"

Related: Carbon nanotubes study finds local solvation is decisive for fluorescence of biosensors
https://phys.org/news/2024-08-carbon-nanotubes-local-solvation-decisive.html