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.

The WS₂ nanotubes emerge as novel class of polaritonic quasi 1D-material by sustaining excitons coupled with tunable cavity modes.

The first polyvinylidene fluoride (PVDF)–MoS₂ nanotube based nanocomposites have been prepared. The structure of the nanocomposite is discussed based on electron microscopy, X-ray and atomic force microscopy studies. The results indicate that the well-dispersed MoS₂ nanotubes are efficiently incorporated into the polymer matrix. The polymer–nanotube interaction stabilizes a novel 2b stacking within the γ-phase, as confirmed by X-ray and AFM measurements, which represents a new PVDF crystal structure. Annealing of the PVDF–MoS₂ nanotube films at 110 °C during polymer crystallization leads to a completely relaxed α-phase with the nanotubes forming the nucleation centres for crystallization of the dendritic α-phase.

We present Raman spectroscopy measurements of the van der Waals bonded ferromagnet ${\mathrm{Fe}}_{3-x}{\mathrm{GeTe}}_2$, together with lattice dynamics. Four out of eight Raman active modes are observed and assigned, in agreement with numerical calculations. The energies and linewidths of the observed modes display an unconventional temperature dependence at about 150 and 220 K, followed by the nonmonotonic evolution of the Raman continuum. Whereas the former can be related to the magnetic phase transition, the origin of the latter anomaly remains an open question.