I have constructed a polymer system in an amorphous cell with an initial density of 0.1 g/cm3. Now, I am going to adjust the density to the experimental density value of about 1.0 g/cm3. According to a paper, it might be done by scaling the coordinates but I do not know how to. I searched my question here and I found comments on running forcite at chosen temp. and pressure. I've tried it but I always get lower density.
Could you please help with that?