| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: method of embedding trade marks or identification marks into monocrystalline diamond material, obtained through chemical gas-phase deposition, involves preparation of a diamond substrate and initial gas, dissociation of the initial gas, which provides the process of homoepitaxial growth of diamond, and to put trade marks or identification marks into synthetic diamond material at least one dopant chemical element selected from a group comprising nitrogen, boron and silicon is introduced into the synthesis process in a controlled manner in form of defect centres which upon excitation emit radiation with characteristic wavelength and in such concentration such that the trade mark or identification mark, under normal observation conditions, should not be easily seen or should not affect the perceived quality of the diamond material, but should be seen or become seen when illuminated with light with wavelength of the excited defect centres, the value of which is less than the said characteristic wavelength of radiation emitted by the defect centres, and visible under observation conditions where the said illumination is not visible to the observer. ^ EFFECT: invention simplifies determination of synthetic nature of diamond material. ^ 52 cl, 4 ex, 19 dwg |
