Abstract
Nitrogenated diamond-like carbon (N-DLC) films have more attention for biomaterials because they have excellent biocompatibility. It is not enough to apply them to the biomedical device to their inadequate adhesion property between the films and polymer substrates. To solve the problem, we have proposed the multi-layer of DLC and N-DLC films on the substrate. The films were evaluated by Raman spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy and contact angle measured. The cytocompatibility has been investigate under cell culture using NIH-3T3. It was found that the multi-layer of N-DLC/DLC was able to improve both adhesion property and biocompatibility.
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