Studying Effects of Bias Voltage on Properties, Wettability and Platelet Adhered Behavior of DLC Films Prepared By DC-MFCVAD

Abstract:

Diamond-Like carbon (DLC) films were prepared under different bias voltage by direct current magnetic filter cathode vacuum arc deposition (DC-MFCVAD). Bias voltages changed from 0 to -200 V. The study intends to investigate the effect on the properties of DLC films for biomedical applications. X-ray photoelectron spectrum (XPS) was used to investigate composition of the films. Nano-scratch tests were used to characterize effects of bias voltage to adhesion. Furthermore, the wettability of the DLC films was investigated by contact angle measurements using four common liquids. Finally, platelet adhesion experiments were done to evaluate the interaction of blood with DLC films. The results showed that the adhesion, wettability and hemo-compatibility of DLC films were affected by bias voltage.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 2203-2206
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.2203
• Online since: September 2007
• Authors: Feng Wen, Nan Huang, Yong Xiang Leng, Zhi Li, Yang Cao
• Keywords: DLC Film, Nanoscratching, Platelet Adhesion, Surface Energy

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