Properties of aqueous NaCl solutions in external electromagnetic fields
Authors: Chang, Kai-Tai1; Weng, Cheng-I.2
Source: Molecular Physics, Volume 106, Numbers 21-23, November 2008 , pp. 2515-2524(10)
Publisher: Taylor and Francis Ltd
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Abstract:
Molecular dynamics simulations are performed to investigate the effects of an external electromagnetic field on aqueous NaCl electrolyte solutions at a temperature of 298 K. The simulations assume that the electromagnetic waves propagate in the x-axis direction with a frequency of 50, 100 or 200 GHz. The intensity of the electromagnetic field is assumed to vary in the range 0.1-0.3 V/Å. The simulations are conducted for two different NaCl solution concentrations, namely 1 m and 5 m (molality). The results indicate that as the intensity of the electromagnetic field is increased, the re-orientation of the water molecules becomes more pronounced and the diffusion coefficient of the aqueous NaCl solution increases. It is also shown that in both the low-concentration and high-concentration solutions, the diffusion coefficients of water molecules and ions increase as the frequency and intensity of the electromagnetic field increase.Keywords: molecular dynamics simulation; electromagnetic field; aqueous NaCl solution; radial distribution function; diffusion coefficient
Document Type: Research article
DOI: 10.1080/00268970802577826
Affiliations: 1: Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 2: Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan, Taiwan
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