[Pw_forum] How to calculate the energy barrier for nanoribbon?

[Hongsheng Zhao]

Hi all,

I've read many papers which calculate the energy barrier  for 
nanoribbon, but all of these papers don't give the formulae to do this 
calculatation.  Could someone please give me some hints on the formula 
to calculate the energy barrier for our system?  Thanks in advance.

Regards.
-- 
Hongsheng Zhao <zhaohscas at yahoo.com.cn>
School of Physics and Electrical Information Science,
Ningxia University, Yinchuan 750021, China