Encapsulated and hollow closed-cage structures of WS2 and MoS2 prepared by laser ablation at 450–1050°C

Sen, Rahul and Suenaga, K and Achib, Y and Iijima, S and Kataura, H and Govindaraj, A and Suzuki, S (2001) Encapsulated and hollow closed-cage structures of WS2 and MoS2 prepared by laser ablation at 450–1050°C. In: Chemical Physics Letters, 340 (3-4). pp. 242-248.

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Abstract

Encapsulated and hollow closed-cage onion-like structures of WS2 and MoS2 were prepared by laser ablation of the corresponding layered structures in argon atmosphere at four varied temperatures. A detailed study for WS2 indicates that only metal-filled onion-like structures are produced at temperatures Tless-than-or-equals, slant650°C, whereas a mixture of metal-filled and hollow structures are produced at Tgreater-or-equal, slanted850°C. The encapsulated metal is identified to be predominantly the metastable β phase of tungsten. Very short tube-like or elongated polyhedral structures are also obtained at high temperatures.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Others
Date Deposited:	09 Nov 2011 09:48
Last Modified:	09 Nov 2011 09:48
URI:	http://eprints.iisc.ernet.in/id/eprint/39545

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