Unravelling the anomalous dielectric permittivity of nanoconfined electrolyte solutions

Nanoscale
Richard RenouAziz Ghoufi

Abstract

The dielectric properties of sodium chloride solutions confined in a hydrophilic nanocavity were investigated by means of molecular dynamics simulations. Unlike what is observed in the bulk phase, three dielectric regimes were evidenced, namely an anomalous increase in the dielectric permittivity at low concentrations (with respect to confined pure water), a dielectric plateau at intermediate concentrations and finally a bulk-like behavior for salt concentrations higher than a critical value. It was shown that this peculiar behavior results from the competition between dielectric saturation due to the electric field generated by ions (which tends to lower the dielectric permittivity) and the ion-induced perturbation of pre-oriented water molecules inside the nanocavity which gain some rotational degrees of freedom (entropic contribution) leading to an increase in dipolar fluctuations responsible for the increase in the dielectric permittivity.

References

Jan 18, 1996·Nature·J Israelachvili, H Wennerström
Mar 1, 1985·Physical Review A: General Physics·W G Hoover
Jan 6, 2006·The Journal of Chemical Physics·J L F Abascal, C Vega
Apr 22, 2006·The Journal of Chemical Physics·Ronald Blaak, Jean-Pierre Hansen
Apr 24, 2009·ACS Nano·Fuminori MikamiYutaka Maniwa
Dec 22, 2009·Physical Chemistry Chemical Physics : PCCP·R BusselezD Morineau
Feb 16, 2011·Chemical Reviews·Yizhak Marcus
Feb 24, 2011·The Journal of Chemical Physics·Aziz GhoufiGuillaume Maurin
Sep 26, 2012·Physical Review Letters·H ZhuD Morineau
Sep 10, 2013·Physical Review Letters·Stephan Gekle, Axel Arnold
Sep 10, 2013·Physical Review Letters·H ZhuD Morineau

❮ Previous
Next ❯

Citations

Jan 31, 2021·The Journal of Chemical Physics·Sayantan Mondal, Biman Bagchi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Richard RenouAziz Ghoufi
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
A Drozd-RzoskaJ Ziolo
© 2021 Meta ULC. All rights reserved