# SiO2 for COMB potential units metal atom_style charge read_data data.comb mass 1 28.0855 group type1 type 1 compute charge1 type1 property/atom q compute q1 type1 reduce ave c_charge1 mass 2 16.00 group type2 type 2 compute charge2 type2 property/atom q compute q2 type2 reduce ave c_charge2 pair_style comb pair_coeff * * ffield.comb Si O neighbor 0.5 bin neigh_modify every 10 delay 0 check yes timestep 0.0002 thermo_style custom step temp etotal pe evdwl ecoul c_q1 c_q2 press vol thermo_modify norm yes velocity all create 300.0 3482028 fix 1 all nvt temp 300.0 300.0 0.1 fix 2 all qeq/comb 10 0.001 file fq.out thermo 10 run 100