This work was partly supported by the National Natural Science Foundation of China (No.10345003) and Hong Kong Research Grants Council (RGC) Competitive Earmarked Research Grants(CERG) # CityU 1013/01E or 9040577 and CityU 1052/02E or 9040689.
Plasma ion implantation, an alternative to conventional beam-line ion implantation, is a sheath-acceleration ionbombardment technique and the initial sheath is crucial to the process efficacy and surface properties. T...