A diamond-like carbon film (DLC film) is formed on the surface of a base material made of an inorganic material, such as ceramics, or the like, or an organic material, such as resin, or the like. The surface of the resultant DLC film is treated with plasma, or the like, so as to be activated. Various monomers having biocompatibility, etc., are graft-polymerized to the activated surface of the DLC film, whereby a polymer layer is formed from the monomers grafted to the surface of the DLC film. Thus, the base material coated with the DLC film modified with a polymer which does not readily separate can be realized.在由陶瓷等無機材料或樹脂等有機材料構成的基材表面形成類鑽碳膜(DLC膜),經由電漿等處理來活化形成的DLC膜表面,在活化的DLC膜表面,經由將具有生體適合性等種種單體予以接枝聚合,在DLC膜表面接枝單體聚合物。經由此,能夠實現以不容易脫離的聚合物修飾的DLC膜所施加塗層的基材。11‧‧‧基材21‧‧‧反應室22‧‧‧真空幫浦23‧‧‧電極24‧‧‧電極25‧‧‧高頻電源26‧‧‧匹配網路(matching network)
