Ultrahigh-density Data Memory Based On The Bi-stable States

The rapid development of information science and the continuous extension of computer-applied field have made the ultrahigh-density data memory be a newly important research field.By investigating the variation of the potential energy of single crystal lattice of body-centered cubic(BCC) crystal to the position of its body-centered atom, a key physical phenomenon is discovered that BCC crystal holds bi-steady states. Based on the fact, a novel ultrahigh-density data memory principle is proposed in this paper.By virtue of molecular dynamics simulations method, the crucial research method in micro-field, the stability of polyatomic combination of BCC crystal is studied, with a conclusion is drawn that BCC crystal keep stable no matter how many body-centered atoms are combined.A detailed analysis of using atomic force microscope(AFM) to pulling out or pushing down the body-centered atom is presented. It is found that AFM, with sole atom on its vertex, is successful in pushing down but is failing in pulling out the body-centered atom. An equivalent dynamics equation of body-centered atom is given, with which the variation of the position of body-centered atom to the applied strike, vibrating and the departure of the actual position of body-centered atom from its stable position is get. With energy theorem, a maximum total energy limit in every direction is offered to maintain the body-centered atom stable.