<div dir="ltr"><div><div><div><div>Dear Users,<br></div>I am writing this mail for some
discrete help. In my research , I need to generate bandstructure for a
specific nanowire . Now, I am new to Quantum Espresso. As far as I
understand, Quantum Espresso calculates only systems periodic in three
directions. But for nanowires (1D) I may need to define vacuum in two
directions and periodicity in only the desired directions. After reading
various articles I understand that it is done by specifying atomic
positions in the input file and creating a supercell. Could anyone
please help how can I set atomic positions manually to get any
desirable supercell?( Or maybe, how can I define my supercell, because
as far as I understand , I know only atomic positions of an unit cell
beforehand , PLEASE LET ME KNOW IF I AM WRONG)? How can I do it in any
desired direction?. And how do I calculate the atomic position values
for putting in the input file so that I can construct any supercell I
want ? Could anyone please enlighten me in the right direction or any
example input file maybe?( best, if for 1D , 2D or non-periodic system)<br><br><br></div>Sincerely<br></div>Akash<br></div>Bangladesh University of Engineering and Technology</div>