Plasma Coating and Surface Modification of Amorphous Carbon for Biomedical Applications

Abstract:

Amorphous carbon coatings for implantable medical devices require high mechanical strength, adhesion and uniform biocompatibility response across the devices. Investigation of a-C:H properties and structure variation with thickness and substrate material provides valuable insight into requirements for device coating. A number of devices are coated and the effect of interfacial layers, film doping and the spatial variation in quality is investigated.

• Periodical: Materials Science Forum (Volume 518)
• Pages: 477-484
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.518.477
• Online since: July 2006
• Authors: P.D. Maguire, T.I.T. Okpalugo, I. Ahmad
• Keywords: Amorphous Carbon, Interfacial Layer, Medical Devices, Plasma Coating, Raman Spectroscopy

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[18] Patents GB2338716 B, US6638569 B2. 0 0 . 2 0 . 4 0 . 6 1 2 3 4 5 6 7 8 ID/IG Ratio In ne r O ute r 0 0. 2 0. 4 0. 6 0. 8 1 1. 2 1. 4 1 2 3 4 5 6 7 8 ID/IG Ratio In n_ s ten t O ut_s te nt Fig. 8 Raman ID/IG on inner and outer surfaces of Silicon doped a-C: H coating of stainless steel stents, (a) 50 nm and (b) 100nm thickness.