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Full-Text Articles in Physical Sciences and Mathematics
Dynamics At A Janus Interface, M. Von Domaros, D. Bratko, B. Kirchner, A. Luzar
Dynamics At A Janus Interface, M. Von Domaros, D. Bratko, B. Kirchner, A. Luzar
Chemistry Publications
Electric field effects on water interfacial properties abound, ranging from electrochemical cells to nanofluidic devices to membrane ion channels. On the nanoscale, spontaneous orientational polarization of water couples with field alignment, resulting in an asymmetric wetting behavior of opposing surfacesa field-induced analogue of a chemically generated Janus interface. Using atomistic simulations, we uncover a new and significant field polarity (sign) dependence of the dipolar- orientation polarization dynamics in the hydration layer. Applying electric fields across a nanoparticle, or a nanopore, can lead to close to 2 orders of magnitude difference in response times of water polarization at opposite surfaces. Typical …