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  • Mechanical exfoliation WSe2 on sapphire substrate

Mechanical exfoliation WSe2 on sapphire substrate

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  • Tylor Keller,Alfa Chemistry
  • Mechanical exfoliation WSe2 on sapphire substrate
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  • Alfa Chemistry
  • Tylor Keller
  • N/A
  • N/A
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  • United States
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  • https://www.alfa-chemistry.com/
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  • Tylor Keller,Alfa Chemistry
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  • Product Category
    Graphene

    Material
    N/A

    Purity (%)
    N/A

    Size
    10 mmx10 mm

    Thickness
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    Specification
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    Description
    Other Experimental PropertiesVery pure tungsten can be cut with hacksaw and forged, spun, drawn, and extruded; impure metal brittle, worked with difficulty;NOT AFFECTED BY SULFUR OR PHOSPHORUS; GOOD ELECTRICAL CONDUCTIVITY;VIGOROUS REACTION WITH BROMINE TRIFLUORIDE, CHLORINE TRIFLUORIDE; REACTION WITH FLUORINE MAY BE INCANDESCENT;Corroded by sea water.;Atomic number: 74; valences 6, 5, 4, 3, 2. Naturally occurring isotopes: 180 (0.135%); 182 (26.4%); 183 (14.4%); 184 (30.6%); 186 (28.4%).;Hardness: 6.5-7.5. Specific heat (20 ℃): 0.032 cal/g/deg C; heat of fusion: 44 cal/g; electrical resistivity (20 ℃) 5.5 uohm-cm.;Forms trioxide at red heat; not attacked by water; oxidized to dioxide by steam; very stable to acids, attacked only superficially by concn nitric acid or aqua regia; attacked by fluorine at room temp; by chlorine at 250-300 ℃ giving hexachloride in absence of air and trioxide and oxychloride in presence of air.;Powdered tungsten can be pyropohric under the right conditions. Slowly sol in fused potassium hydroxide in air, in fused sodium carbonate in air, and sol in fused mixture of sodium hydroxide and nitrate.

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