Effect of Target Power on Microstructure, Tribological Performance and Biocompatibility of Magnetron Sputtered Amorphous Carbon Coatings oleh Vishnu Shankar Dhandapani, Ramesh Subbiah, Elangovan Thangavel, Chang-Lae Kim, Kyoung-Mo Kang, Veeravazhuthi Veeraraghavan, Kwideok Park, Dae-Eun Kim, Dongkyou Park, Byungki Kim