increased its region of stability, the melting temperatures of ice III and IV increased by 15 K, and the melting temperature of ice Ih was not impacted, in the presence of a 0.3 V/nm static electric field applied along the principal axis of the dielectric tensor, further illustrating the impact of the perturbation term in equation ( ) . MD simulations of sixsite and tip4p/ICE water models demonstrated that heterogenous nucleation rates increased in the presence of 1.5-3.5 V/nm and a 5 V/nm intensity electric field .