Document Type


Original Publication Date


Journal/Book/Conference Title

J. Phys. Chem. C



First Page


DOI of Original Publication


This document is the unedited Author's version of a Submitted Work that was subsequently accepted for publication in Journal of Physical Chemistry C, copyright © 2007 American Chemical Society after peer review. To access the final edited and published work see

Date of Submission

May 2022


Using molecular simulations of nano-sized aqueous droplets on a model graphite surface we demonstrate remarkable sensitivity of water contact angles to the applied electric field polarity and direction relative to the liquid/solid interface. The effect is explained by analyzing the influence of the field on interfacial hydrogen bonding in the nanodrop, which in turn affects the interfacial tensions. The observed anisotropy in droplet wetting is a new nanoscale phenomenon that has so far been elusive as, in current experimental setups, surface molecules represent a very low fraction of the total number affected by the field. Our findings may have important implications for the design of electrowetting techniques in fabrication and property tuning of nanomaterials.


© 2007 American Chemical Society

Is Part Of

VCU Chemistry Publications

Included in

Chemistry Commons