As the rapid development of science and technology, many electronic component are gradually microminiaturizing, multifunction integrating, intelligentizing and having ligter weight. These development precipitate emerge of micro/nanoelectro mechanical systems(MEMs/NEMs). As the dimension of the systems decrease sharply, the interfacial clearance between the components are always a few of nanometers. Therefore tribological limitations such as stiction, friction and wear are the major problems that limited the...