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Static dielectric properties of dense ionic fluids
The Journal of Chemical Physics ( IF 3.1 ) Pub Date : 2015-05-12 13:24:40 , DOI: 10.1063/1.4920976 Grigory Zarubin 1, 2 , Markus Bier 1, 2
The Journal of Chemical Physics ( IF 3.1 ) Pub Date : 2015-05-12 13:24:40 , DOI: 10.1063/1.4920976 Grigory Zarubin 1, 2 , Markus Bier 1, 2
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The static dielectric properties of dense ionic fluids, e.g., room temperature ionic liquids (RTILs) and inorganic fused salts, are investigated on different length scales by means of grandcanonical Monte Carlo simulations. A generally applicable scheme is developed which allows one to approximately decompose the electric susceptibility of dense ionic fluids into the orientation and the distortion polarization contribution. It is shown that at long range, the well-known plasma-like perfect screening behavior occurs, which corresponds to a diverging distortion susceptibility, whereas at short range, orientation polarization dominates, which coincides with that of a dipolar fluid of attached cation-anion pairs. This observation suggests that the recently debated interpretation of RTILs as dilute electrolyte solutions might not be simply a yes-no-question but it might depend on the considered length scale.
中文翻译：
稠密离子液体的静态介电性能
密闭离子液体（例如室温离子液体（RTILs）和无机稠盐）的静态介电特性，通过巨函数蒙特卡洛模拟在不同的长度尺度上进行了研究。开发了一种普遍适用的方案，该方案允许将致密的离子流体的电敏感性近似分解为取向和畸变极化贡献。结果表明，在长距离范围内，发生了众所周知的类似等离子体的完美筛选行为，这对应于发散的形变敏感性，而在短距离范围内，取向极化起主导作用，这与附着的阳离子阴离子的偶极流体的取向极化相吻合。对。
更新日期：2015-05-13
中文翻译：
稠密离子液体的静态介电性能
密闭离子液体（例如室温离子液体（RTILs）和无机稠盐）的静态介电特性，通过巨函数蒙特卡洛模拟在不同的长度尺度上进行了研究。开发了一种普遍适用的方案，该方案允许将致密的离子流体的电敏感性近似分解为取向和畸变极化贡献。结果表明，在长距离范围内，发生了众所周知的类似等离子体的完美筛选行为，这对应于发散的形变敏感性，而在短距离范围内，取向极化起主导作用，这与附着的阳离子阴离子的偶极流体的取向极化相吻合。对。
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