Jojo, Please note this correction - "...current density is directly related to radius^2..." - should read "...current is directly related to radius^2..."
The extra word changes the meaning entirely. Too large a radius (~ electron mean free path), though, will make the current diffusive instead of ballistic. -- Lou Pagnucco Lou Pagnucco wrote: >Jojo, > >I believe in both metal nanowires and carbon SWNTs, current density is >directly related to radius^2 - Refer to equation(1), page 1 of - > >"Stability of Metal Nanowires at Ultrahigh Current Densities" >http://arxiv.org/pdf/cond-mat/0411058v3.pdf
