先进材料疑固实验室 Liguid/Solid interface Laboratory of Advanced Materials Solidification The rate of atom movement from solid to liquid: )s-.-NsfAmbsexp(-) The rate of atom movement from liquid to solid: ()L-=Ni.fi.Arbiexp() Ns and N are the numbers of atoms in the solid side and the liquid side of the S/L interface per unit area of the interface,respectively.For a flat S/L interface, Ns=NL=N. fs and fL are the probability of atoms in the solid and liquid,respectively,that can jump to the other side of the interface(normally,fs=f=1/6). 上海充通大￥ SHANGHAI JIAO TONG UNIVERSITYLiquid/Solid interface The rate of atom movement from solid to liquid: The rate of atom movement from liquid to solid:  NS and NL are the numbers of atoms in the solid side and the liquid side of the S/L interface per unit area of the interface, respectively. For a flat S/L interface, NS=NL=N.  fS and fL are the probability of atoms in the solid and liquid, respectively, that can jump to the other side of the interface (normally, fS=fL=1/6)