Fig. 1: Formation of ultra-long MoS2 nano-channels.
From: Strain-driven growth of ultra-long two-dimensional nano-channels
Schematic of growth steps of MoS2 channels: (I) MoSe2 monolayer with intrinsic 4|8 GBs is produced; (II) sulfur atoms are adsorbed and then nucleation happens due to the strain at GBs; (III) Se atoms are continuously substituted by S atoms from GBs to nearby area to form alloyed regions, and afterward the growth is dominated by interface energy; and (IV) MoS2 channels with sharp interface form, and eventually the growth is sustained by the strain again to widen the channels.
