This research shows a reference study about the technique of the nanotechnology, kinds of nano materials, methods of its manufacturing, its characteristics, its applications, and the role of nano in electronics and optoelectronic. As well this research explains the possibility of manufacturing of a computer with carbon nanotubes and the technique of the paper battery and the capacitor with high capacity. This study gives too an overvieo of the devices and the used technique to in vestigate the nano materials.The article shows too the behavior of the quantum mechanics with the nano electronics. Finally it gives a general overvieo about the quantum devices and their own simulation processes.