The main purpose of this class is to make students learn about theories of multiscale simulation and its actual application method by using computational tools for effective designing of nano scale devices and prediction of the characteristics of nano scale materials. First four weeks, lecture will be held about the theories of quantum simulation and in the rest of the semester students will do the simulation by themselves. In the end of semester, the students will be able to do the simulation about nano structure, nanoscale surface reconstruction, carbon nanotube, self-directed growth of nanowire initiated by STM, atomic layer deposition, hydrogen storage materials, motion of monoatomic elements and so on.