| 摘要 |
In one aspect, there is provided a process for producing a diamond having a structure of extremely minute acicular projection array disposed on a surface thereof, which process not only attains simplification of production process but also is applicable to materials of various configurations. Diamond base material (2a) consisting of a diamond base material in at least a region near its surface doped with a concentration of 1x1019 atoms/cm3 or more of at least one dopant selected from among boron (B), nitrogen (N), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), copper (Cu), arsenic (As), molybdenum (Mo), platinum (Pt) and gold (Au) is provided. The diamond base material (2a) on the surface thereof is treated by dry etching using oxygen gas to thereby form acicular projection array structure (3) on the surface of the diamond base material. |
