Chemistry of inorganic compounds – Selenium or tellurium or compound thereof – Binary compound
Reexamination Certificate
2005-01-11
2005-01-11
Langel, Wayne A. (Department: 1754)
Chemistry of inorganic compounds
Selenium or tellurium or compound thereof
Binary compound
C423S561100, C423S565000, C423S566100
Reexamination Certificate
active
06841142
ABSTRACT:
Nanotubes of transition metal chalcogenides as long as 0.2-20 microns or more, perfect in shape and of high crystallinity, are synthesized from a transition metal material, e.g. the transition metal itself or a substance comprising a transition metal such as an oxide, water vapor and a H2X gas or H2gas and X vapor, wherein X is S, Se or Te, by a two-step or three-step method including first producing nanoparticles of the transition metal as long as 0.3 microns, and then annealing in a mild reducing atmosphere of the aforementioned gas or gas mixture. The transition metal chalcogenide is preferably WS2or WSe2. Tips for scanning probe microscopy can be prepared from said long transition metal chalcogenide nanotubes.
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Homyonfer Moshe
Rothschild Aude
Tenne Reshef
Browdy and Neimark , P.L.L.C.
Langel Wayne A.
Yeda Research and Development Co. Ltd.
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