Optical properties of exfoliated MoS2 coaxial nanotubes - analogues of graphene

Nanoscale Res Lett. 2011 Nov 15;6(1):593. doi: 10.1186/1556-276X-6-593.

Abstract

We report on the first exfoliation of MoS2 coaxial nanotubes. The single-layer flakes, as the result of exfoliation, represent the transition metal dichalcogenides' analogue of graphene. They show a very low degree of restacking in comparison with exfoliation of MoS2 plate-like crystals. MoS2 monolayers were investigated by means of electron and atomic force microscopies, showing their structure, and ultraviolet-visible spectrometry, revealing quantum confinement as the consequence of the nanoscale size in the z-direction.