Dear all<br><br>I have a system consisting of 2 substrates (20 nm distance between them) and inside them there are polymer chains. I would like during my NVT simulations the substrates NOT to move (I suppose I have to put the velocity of the COM of it's substrate to be zero). <br>
<br>Does anyone know how to do that? <br><br>Thanks in advance<br>Chrysostomos<br>