2015/03/31 by Grigory Zarubin, Markus Bier · 8 citations
Chemical Engineering · Chemistry · Engineering · Physics and Astronomy · #Dielectric #Dipole #Distortion (music) #Electrolyte #Electrostatics and Colloid Interactions #Ionic bonding #Ionic liquids properties and applications #Monte Carlo method #Phase Equilibria and Thermodynamics #Polarization (electrochemistry) #cond-mat.soft #cond-mat.stat-mech #physics.chem-ph
paper · pdf · doi:10.1063/1.4920976
published in The Journal of Chemical Physics 142(18), 184502 (American Institute of Physics)
openalex publication_date 2015/05/12 · arxiv created 2015/05/13 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.