LOW ENERGY ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS
Surface bioactivity of plasma implanted silicon and amorphous carbon
Nuclear Science and TechniquesVol.15, No.3pp.144-154Published in print 01 Jun 2004
Plasma immersion ion implantation and deposition (PIII&D) has been shown to be an effective technique to enhance the surface bioactivity of materials. In this paper, recent progress made in our laboratory on plasma surface modification single-crystal silicon and amorphous carbon is reviewed. Silicon is the most important material in the integrated circuit industry but its surface biocompatibility has not been investigated in details. We have recently performed hydrogen PIII into silicon and observed the biomimetic growth of apatite on its surface in simulated body fluid. Diamond-like carbon (DLC) is widely used in the industry due to its excellent mechanical properties and chemical inertness. The use of this material in biomedical engineering has also attracted much attention. It has been observed in our laboratory that doping DLC with nitrogen by means of PIII can improve the surface blood compatibility. The properties as well as in vitro biological test results will be discussed in this article.
Hydrogen implanted siliconPlasmaBioactivityApatiteDiamond-like carbonAmorphous carbonBlood compatibility