[gmx-users] Restrict rotation between 2 molecules

[Amir Marcovitz]

Hi,

i want to simulate 2 parallel plates (each composed of single atoms with
equal spacing , for example 2X2 atoms plate)
i want to simulate them such that they are parallel to each other and can
move only along one axis (for that i used posre.itp..)

what is the best best way to prevent them from rotating with respect to each
other?

i tried to define improper angles between atoms on the surfaces, do you
think it is a good strategy?

thanks,
amir
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