Integrate circuit (IC) is the technology foundation of information industry and a key driving force promoting the development of the high technology. Chemical mechanical polishing (CMP) has been considered as a practical and irreplaceable planarization technology of wafer in IC manufacturing. It is not only the most effective method of achieving ultra-smooth and non-damage surface in manufacturing monocrystalline silicon wafer, but also the ideal method of realizing local and global planarization of wafer i...