Dear All,<br />
     I am in a fix <br />
(i) as to how to draw the VD- ID, VG-ID etc. by kwant coding. I am to some extent clear to <br />
get those relations from the back calculations of G= ID/VG and the current expression in <br />
terms of the G. Finding G by kwant they may be found out. But, I like very much a direct <br />
coding technique to get these curves.<br />
(ii) as to how to visualize a 3D graphics of nanostructure like QWR, QD which I visualize in <br />
2D without problem. <br />
Please help me.<br />
Best Wishes.<br />
K.K.Ghosh <br>