Dynamics of the fast component of nano-confined water under electric field

We have investigated the diffusion of water molecules confined in the pores of folded silica materials (FSM), by means of quasielastic neutron scattering in the time range of 1 picosecond and 65 picoseconds. The measurements were performed on the direct geometry time-of-flight instrument CNCS at the Spallation Neutron Source, for temperatures between 220 K and 245 K, and at two electric field values, 0kV/mm and 2kV/mm. The goal was to investigate the effects of moderate electric field on the previously observed fast component of nano-confined water. In contrast to our earlier observation on the slow dynamics (at longer times) [1], the present results indicate a less drastic effect of applied electric field on the fast dynamics.\\[4pt] [1] S.O. Diallo, E. Mamontov, S. Inagaki, Y. Fukushima, and N. Wada, ``Enhanced Translational Dynamics of Water under Electric Field'' Phys. Rev. E 86, 021506 (2012).