Facile synthesis of WS2 nanotubes by sulfurization of tungsten thin films: formation mechanism, and structural and optical properties.

@article{Hossain2018FacileSO,
  title={Facile synthesis of WS2 nanotubes by sulfurization of tungsten thin films: formation mechanism, and structural and optical properties.},
  author={Emroj Hossain and A. A. Rahman and Rudheer D. Bapat and Jayesh B. Parmar and Amit P. Shah and Ashish Arora and Rudolf Bratschitsch and Arnab Bhattacharya},
  journal={Nanoscale},
  year={2018},
  volume={10 35},
  pages={
          16683-16691
        }
}
While 2D layers of WS2 have been extensively studied, there are very few investigations of WS2 nanotubes. These have usually been grown via a 2-step process involving a WO3-x intermediate. We report a simple process for the synthesis of WS2 nanotubes via the sulfurization of tungsten films under appropriate conditions and present details of their structural and optical properties that help elucidate the formation mechanism. Electron-beam evaporated films of tungsten are sulfurized under flowing… 
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