simulate Pt interact with H2O

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1

Dear all,

I want to simulate Pt interaction with water molecules using the following equation:Screen Shot 2017-06-17 at 12.09.14.png
in which
Screen Shot 2017-06-17 at 13.15.18.png[1]

The parameters for Pt-H and Pt-O interaction shown in the following table:
Screen Shot 2017-06-17 at 13.19.37.png

I only found Morse potential in Lammps have the similar format, does anybody know how to fit this long equation into lammps? Many Thanks!

[1] Pinto, Leandro M. C., Paola Quaino, Mauricio D. Arce, Elizabeth Santos, and Wolfgang Schmickler. ChemPhysChem 15, no. 10 (July 21, 2014): 2003–9. doi:10.1002/cphc.201400051.

Jiamin

2

Dear all,

I want to simulate Pt interaction with water molecules using the following
equation:!Screen Shot 2017-06-17 at 13.15.18.png|337x31
in which
!Screen Shot 2017-06-17 at 13.19.37.png|577x91[1]

The parameters for Pt-H and Pt-O interaction shown in the following table:
!Screen Shot 2017-06-17 at 12.09.14.png|554x59

I only found Morse potential in Lammps have the similar format, does
anybody know how to fit this long equation into lammps? Many Thanks!

http://lammps.sandia.gov/doc/Section_modify.html