Hello, I'm studying for a project a rectangular-cross sectionned suspended silicon nanowire. My question is very simple: at which current will my nanowire break? The melting point is 1687K and I start at 300K I don't really know where to start since the resistance, the thermal conductivity and many physical depend upon the temperature and my temperature range is wide. I've tried the following: Provided that the heat of fusion of Silicon is: 50.6kJ.mol-1 I have the heat generated by the electrical power = R*I*I*t R=electrical resistance I=current t=time I must match the heat generated by the electrical power and heat of fusion (Heat of fusion)*(Volume*density/molar mass)=R*I*I*t And I can have my current I However this model is stupid because I don't take to account the dissipation by convection, conduction and scattering. how to do it properly?