Re: [gmx-users] dipole on an atom

2017-11-06 Thread Faezeh Pousaneh
virtual sites plus shell (drude) particle. which unfortunately there is little information in the manual. Best regards On Mon, Nov 6, 2017 at 5:16 PM, Faezeh Pousaneh wrote: > I think I have my answer to my initial question; how to give an atom a > dipole? One can use virtual sites. > > > Bes

Re: [gmx-users] dipole on an atom

2017-11-06 Thread Faezeh Pousaneh
I think I have my answer to my initial question; how to give an atom a dipole? One can use virtual sites. Best regards On Mon, Nov 6, 2017 at 3:03 PM, Faezeh Pousaneh wrote: > David, > do you thin that Stockmayer potential can be implemented by user-specified > potential? > > > Best regards >

Re: [gmx-users] dipole on an atom

2017-11-06 Thread Faezeh Pousaneh
David, do you thin that Stockmayer potential can be implemented by user-specified potential? Best regards On Sun, Nov 5, 2017 at 4:18 PM, David van der Spoel wrote: > On 05/11/17 16:07, Faezeh Pousaneh wrote: > >> Yes, exactly. But my atom is uncharged sphere, I'll bring two similar size >> a

Re: [gmx-users] dipole on an atom

2017-11-05 Thread David van der Spoel
On 05/11/17 16:07, Faezeh Pousaneh wrote: Yes, exactly. But my atom is uncharged sphere, I'll bring two similar size and similar mass (+ -) ions inside the sphere. So rotation will not happen then for atom. If you simulate multiple such spheres they will behave like a Stockmayer dipolar flui

Re: [gmx-users] dipole on an atom

2017-11-05 Thread Faezeh Pousaneh
Yes, exactly. But my atom is uncharged sphere, I'll bring two similar size and similar mass (+ -) ions inside the sphere. So rotation will not happen then for atom. On Nov 5, 2017 16:00, "David van der Spoel" wrote: On 05/11/17 15:54, Faezeh Pousaneh wrote: > So I guess the only solution can

Re: [gmx-users] dipole on an atom

2017-11-05 Thread David van der Spoel
On 05/11/17 15:54, Faezeh Pousaneh wrote: So I guess the only solution can be: I take two small ions bring them inside original atom, parametrize their interactions with each other and the initial atom such that they stick inside the atom. What do you think? In fact you are then creating a small

Re: [gmx-users] dipole on an atom

2017-11-05 Thread Faezeh Pousaneh
So I guess the only solution can be: I take two small ions bring them inside original atom, parametrize their interactions with each other and the initial atom such that they stick inside the atom. What do you think? Best regards On Sun, Nov 5, 2017 at 3:42 PM, David van der Spoel wrote: > O

Re: [gmx-users] dipole on an atom

2017-11-05 Thread David van der Spoel
On 04/11/17 19:19, Faezeh Pousaneh wrote: Hi, I have an uncharged atom, and I would like to give it a dipole. Any suggestion? impossible in gromacs. Best regards -- David van der Spoel, Ph.D., Professor of Biology Head of Department, Cell & Molecular Biology, Uppsala University. Box 596,

[gmx-users] dipole on an atom

2017-11-04 Thread Faezeh Pousaneh
Hi, I have an uncharged atom, and I would like to give it a dipole. Any suggestion? Best regards -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_L