<html><body><div style="color:#000; background-color:#fff; font-family:bookman old style, new york, times, serif;font-size:14pt"><div>Dear Gromacs Specialists,</div><div><br></div><div>I made a box consists of water with box lengths: 6nm * 6nm * 6nm , then I equilibrated it with NPT ensemble, box size increased to 6.66176, then I <font face="Arial"><font size="3">kept the <i>x-</i> and <i>y-</i>dimensions fixed, and double the system size in <i>z as following:</i></font></font></div><div><font face="Arial"><font size="3"><i>editconf -f pr1.gro -o newbox1.gro -box 6.66176 6.66176 13.32352 -center 3.33088 3.33088 3.33088<br>Next that, I placed one surfactant in center of water phase as following:</i></font></font></div><div><font face="Arial"><font size="3"><i>editconf -f surfactant.gro -o newbox-cta.gro -box 6.66176 6.66176 13.32352 -center 3.33088 3.33088 1.66544<br>genbox -cp newbox-cta.gro -cs newbox1.gro -o
newbox2.gro</i></font></font></div><div><font face="Arial"><font size="3"><i>and I added one ion to my system, then ran md.mdp for production simulation. <br></i></font></font></div><div><font face="Arial"><font size="3"><i>Do I have one air/water interface in my system?</i></font></font></div><div><font face="Arial"><font size="3"><i>Please help me.</i></font></font></div><div><br></div><div><font face="Arial"><font size="3"><i>Best Regards</i></font></font></div><div><font face="Arial"><font size="3"><i>Sara<br></i></font></font></div></div></body></html>