Static dielectric properties

PollockEL, Alder BJ, Patey GN (1981) Static dielectric properties of polarizable Stockmayer fluids. Physica A Stat Theor Phys 108(1) 14—26... 

Skaf MS, Ladanyi BM. 1995. Molecular dynamics simulation of the wave vector-dependent static dielectric properties of methanol-water mixtures. J Chem Phys 102 6542-6551. 

E. L. Pollock, B. J. Alder and G. N. Patey, Static dielectric properties of polarizable Stock-mayer fluids, Physica A, 108 (1981) 14—26. 

Table 16-1. State parameters and static dielectric properties for SPC/E water [26]...

T. Fonseca and B.M. Ladanyi, Wave vector dependent static dielectric properties of associated liquids methanol, J. Chem. Phys., 93 (1990) 8148-8155. 

In conclusion we wish to point out that the relaxation properties of high polymer solutions seem to be determined both by the mobility of the polymer chain and by the structure of the solution. n this respect it would be interesting to investigate experimentally. i eventual parallelism between the polymer-solvent interaction as revealed by the static dielectric properties and the influence of the structure of the solution on the dielectric dispersion. 

Static dielectric properties of icosahedral and Stone-Wales rounded fullerenes, optimized with the REBO2 potential [D.W. Brenner, J. Phys. Cons. Matter 14, 783 (2002)], are studied using a Gaussian renormalized monopole-dipole interaction model. The molecular polarizability of icosahedral and spherical (with defects) fullerenes is found to vary linearly with the cube of the mean radius of the molecules. The local electric field of spherical fullerenes varies on average with the same law as that obtained with a continuous metallic sphere submitted to an external static uniform electric field. 

Fullerenes and carbon onions can be produced by various processes [2-6]. TEM pictures show a wide shape diversity of these particles polyhedral, spherical, highly defected fullerenes with various sizes and number of layers. The spherical structures may contain many defects like (Stone-Wales [7]). In this study we deal with icosahedral regular fullerenes [8] and with very Stone-Wales defective structures that lead to spherical particles [9]. These structures have been optimized with second-generation reactive empirical bond order potential energy (REBO2) [10]. The static dielectric properties are calculated using the RMD... 

Trokhymchuk AD, Holovko MF, Heinzinger K (1993) Static dielectric properties of a flexible water model. 

S. Urban, Static dielectric properties of nematics, in Physical Properties of Liquid Crystals Nematics, D. A. Dunmur, A. Fukuda, and G. R. Luckhurst Eds. lEE, London, 2001, pp. 267-276, and references therein. 

The switching memory effect is a reflection of the fact that the electric displacement, being the function of both the applied field and the material s properties, needs some finite time to adjust to the value of the electric field. The widely accepted model of the instantaneous relationship between the electric displacement and the electric field in the NLC is invalid when the characteristic times of the director dynamics are close to the relaxation times for molecular permanent dipoles. This time scale is typically in the submillisecond range which is of great interest for modem fast-switching devices. The electric displacement (as well as the dielectric torque density) becomes a function of the static dielectric properties of the NLC, the present and past electric field, and the present and past director. We discussed the recently proposed theory and experimental verification of the phenomenon [11]. The model in Ref [11] should be applicable to dynamic reorientation of other LC phases in the appropriate range of times/frequencies. In the case of ferroelectric LCs, the theory should be supplemented by the consideration of spontaneous electric polarization. A similar approach should be also... 

Static dielectric properties of nematics TYPICAL EXAMPLES... 

An electrostatic model of the water monomer, which included polarizability in some reasonable manner might allow for complete simulation of liouid water and of ionic solutions. The static dielectric properties of this ubiquitous solvent would, in a good model, be automatically correct, both on the microscopic and on the macroscopic level. The thermodynamic properties predicted by such a model would, except for minor calibration errors, be close to quantitative. J aving no serious doubts about mimicking water at liquid densities, one can proceed to using more sophisticated models of the vatcr molecule. The raison d etre need no longer bo justification of the methodology, and one can settle down to predictions and correlations confident that the errors in the predictions are inaccuracies in the model. 

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