Complex sentence: In particular, their band gap can vary from zero to about 2 eV and their electrical conductivity can show metallic or semiconducting behawalled nanotubes are likely candidates for miniaturizing electronics.
Split into simpler sentences: In particular, their band gap can vary from zero to about 2 eV and their electrical conductivity can show metallic or semiconducting behavior. Single-walled nanotubes are likely candidates for miniaturizing electronics.