Papers by Author: Mohamad Rusop Mahmood

Abstract: We have produced nanocarbon suspension in pure water, which is named as Nanocaloid ^®, by a simple DC electrolysis from a synthetic graphite plates as anodes and SUS plates as cathodes in purified water at room temperature. The amount of carbon nanoparticles was monitored by the conductivity and pH value of the electrolyte solution, and also by a simple gravimetric way after drying the solution. If the current density increases, the diameter of the carbon particles becomes larger and the amount of precipitates becomes also large. It takes about six weeks to obtain about 0.4 wt% carbon suspension solution under the normal electrolysis conditions. Characterization of Nanocaloid ^® has been conducted to show unique properties and promising epoch-making applications such as solid lubricants for non-oily cutting fluids and conductive agents for reuse of deteriorated Pb-acid batteries. The performance of nanocarbon particles in oil lubricants in addition to the preparation will be reported.

Abstract: We report on the influence of the low deposition temperature of ZnO as semiconductor layer on the electrical characteristics of metal-insulator-semiconductor (MIS) structures. The ZnO films were deposited by radio frequency (RF) magnetron sputtering with variation of temperature from 40°C, 60°C, 80°C, 100°C and 120°C. PMMA were used as insulator layer in the MIS structures. It is found that the ZnO films grown at 120°C has better crystallinity compared to other temperature. I-V characteristics results shown that the different deposition temperature of ZnO films affect the performance of MIS.