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Registration Number

0207U004654, 0104U007138 , R & D reports

Title

The study of capillary properties, nanohardness and structural characteristics of nanosize film materials

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Head

Perevertailo V.asil Mychailovich, Dub Strgey Mikolaevich.,

Registration Date

13-06-2007

Organization

V.Bakul Institute for Superhard Materials

Description

For the first time the wettability of polycrystalline diamond films was studied depending on the grain size variation from 100 m to 5 nm and the film surface energy was theoretically evaluated. The transition from micron- to nanosized grains was found to impair the wettability, i.e. a single-phase surface transforms to a heterophase (solid-gas) one and Wenzel-Deryagin's wetting mechanism changes to the Cassi-Baxter one. The nanostructured films exhibit an increased sensitivity to various physical and chemical effects and superhigh adsorptivity. The Berkovich indenter penetration into the samples was computer simulated. The viscoelasticity of C60 two-dimensional polymers was first revealed and studied.

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