| Abstract
| - Using molecular simulations of nanosized aqueous droplets on a model graphite surface, we demonstrateremarkable sensitivity of water contact angles to the applied electric field polarity and direction relative tothe liquid/solid interface. The effect is explained by analyzing the influence of the field on interfacial hydrogenbonding in the nanodrop, which in turn affects the interfacial tensions. The observed anisotropy in dropletwetting is a new nanoscale phenomenon that has so far been elusive as, in current experimental setups, surfacemolecules represent a very low fraction of the total number affected by the field. Our findings may haveimportant implications for the design of electrowetting techniques in fabrication and property tuning ofnanomaterials.
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