Biocompatibility of DLC films deposited by several kinds of equipments

Abstract

Diamond-Like Carbon (DLC) films have excellent properties such as hemocompatibility, biocompatibility, and in-vivo stability. However, the properties of DLC films strongly depend on deposition conditions, fabrication equipments and deposition methods. To produce a required film, it has to be carefully selected a manufacture method and a preparation condition. In this study, biocompatibility of DLC films deposited by several kinds of equipments was estimated by the cell culture, and the correlation with DLC film surface state was investigated.By several kind of equipment, 19 types of DLC films were deposited on PS dish. We estimated biocompatibility and surface state about these DLC films.We found that there was no correlation between biocompatibility of DLC films and the result of XPS, or that of contact angle measurement. However, there was strong correlation between biocompatibility and hardness test. This result shows hardness test assesses biocompatibility of DLC films.