Journal article
Viscosity of Water under Electric Field: Anisotropy Induced by Redistribution of Hydrogen Bonds
The journal of physical chemistry. B, v 120(21), pp 4818-4827
02 Jun 2016
PMID: 27163345
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The viscosity of water under an external electric field of 0.00-0.90 V/nm was studied using both molecular dynamics simulations and atomistic modeling accounting for intermolecular potentials. For all temperatures investigated, the water viscosity becomes anisotropic under an electric field: the viscosity component parallel to the field increases monotonically with the field strength, E, while the viscosity perpendicular to the field first decreases and then increases with E. This anisotropy is believed to be mainly caused by the redistribution of hydrogen bonds under the electric field. The preferred orientation of hydrogen bonds along the field direction leads to an increase of the energy barrier of a water molecule to its neighboring site, and hence increases the viscosity in that direction. However, the probability of hydrogen bonds perpendicular to the electric field decreases with E, together with the increase of the average number of hydrogen bonds per molecule, causing the perpendicular component of water viscosity to first decrease and then increase with the electric field.
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Details
- Title
- Viscosity of Water under Electric Field: Anisotropy Induced by Redistribution of Hydrogen Bonds
- Creators
- Diyuan Zong - Tsinghua UniversityHan Hu - Drexel UniversityYuanyuan Duan - Tsinghua UniversityYing Sun - Drexel University
- Publication Details
- The journal of physical chemistry. B, v 120(21), pp 4818-4827
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 10
- Grant note
- TG-CTS110056 / Extreme Science and Engineering Discovery Environment (XSEDE) DMR-1104835; CMMI-1200385 / US National Science Foundation; National Science Foundation (NSF) 21176133; 51321002 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering
- Web of Science ID
- WOS:000377238800008
- Scopus ID
- 2-s2.0-84973170743
- Other Identifier
- 991019167516004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Biophysics
- Chemistry, Physical