Non-equilibrium molecular dynamics (NEMD) simulations of liquid water have been performed at 298 K in external square-wave electric fields. Significant non-thermal field effects were noted for coupling of rotational and translational motion with marked increases in diffusion. Non-linear field effects were evident above around 0.05 V angstrom(-1), with enhancements in translational and rotational motion. Translational and librational modes orthogonal to the field's direction were promoted in higher- and lower-frequency fields, respectively, owing to respective coupling of field periods with dipolar and hydrogen bonding relaxation timescales and promotion of libration about a more 'stationary' dipolar alignment for more sustained periods. (C) 2013 Elsevier B.V. All rights reserved.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
Titolo: | Translational and rotational diffusive motion in liquid water in square-wave time-varying electric fields |
Autori: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Handle: | http://hdl.handle.net/11573/524521 |
Appartiene alla tipologia: | 01a Articolo in rivista |