Published Research - Department of Chemistry


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Published by American Physical Society. Phys. Rev. Lett. 86, 5080 - 5083 (2001). Copyright © 2001 American Physical Society. Permission to use.


The barrier height to cation- and anion-induced nucleation to produce water and methanol droplets are calculated by means of an umbrella-sampling Monte Carlo method. The computer simulation corroborates the century-old finding of Wilson that the anion is a better nucleator to produce water droplets than the cation having the same magnitude of charge, even without the presence of external electric field. The simulation also shows that the cation is a better nucleator to produce methanol droplets than the anion.

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