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URN etd-0831111-102058 Statistics This thesis had been viewed 1526 times. Download 277 times. Author Hsun-Liang Chang Author's Email Address No Public. Department Mechanical Engineering Year 2010 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 72 Title The Physical Properties and Biocompatibility of Carbon Nanotubes Modified Diamond-Like Carbon Films Keyword diamond-like carbon nanotubes nanotubes diamond-like carbon Abstract The DLC films made of spin coating carbon nanotubes (CNTs) on silicon substrate and then deposited DLC via C2H2 and Ar. The films were examined by Raman spectra, XPS, AFM, contact angle test, MProbe reflectometer and nanoindentation to probe the chemical bonding, surface, optical and mechanical properties. To evaluate the bio-compatbility of CNTs assisted DLC, we also perform the cell culture of ECV304 for 48 hours.
The results show that for CNTs/DLC films, the higher content of CNTs increases the ratio of ID/IG, the sp2/sp3 ratio which leads to a rougher surface and hydrophobic surface. For mechanical properties, for CNTs addition, the hardnes and elasticity modulus increase compared to undoped DLC film. However, the hardness and elastic modulus of higher CNTs contents DLC films is lower than that in lower CNTs contents films. For low content CNTs in DLCs results in stress reduction which is advantageous to films adhesion. For optical properties, higher CNTs content tends to reflectivity reduction. For 0.005wt% CNTs/DLC film, the refractive index in the film has less variation for optical wavelength from 400 nm to 700 nm. This DLC film seems to have better reflection loss than undoped DLC films. For biocompatibility, the CNTs/DLC films exhibits a higher cell number than that of undoped DLC film. This demonstrates that CNTs modified DLC films has better biocompatibility.
Advisor Committee Che-Hung Wei - advisor
Files Date of Defense 2011-07-27 Date of Submission 2011-08-31