Ionic Layering and Overcharging in Electrical Double Layers in a Poisson-Boltzmann Model

Physical Review Letters
Ankur GuptaHoward A Stone

Abstract

Electrical double layers (EDLs) play a significant role in a broad range of physical phenomena related to colloidal stability, diffuse-charge dynamics, electrokinetics, and energy storage applications. Recently, it has been suggested that for large ion sizes or multivalent electrolytes, ions can arrange in a layered structure inside the EDLs. However, the widely used Poisson-Boltzmann models for EDLs are unable to capture the details of ion concentration oscillations and the effect of electrolyte valence on such oscillations. Here, by treating a pair of ions as hard spheres below the distance of closest approach and as point charges otherwise, we are able to predict ionic layering without any additional parameters or boundary conditions while still being compatible with the Poisson-Boltzmann framework. Depending on the combination of ion valence, size, and concentration, our model reveals a structured EDL with spatially oscillating ion concentrations. We report the dependence of critical ion concentration, i.e., the ion concentration above which the oscillations are observed, on the counter-ion valence and the ion size. More importantly, our model displays quantitative agreement with the results of computationally intensive mod...Continue Reading

References

Sep 28, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Martin Z BazantArmand Ajdari
Nov 5, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Zhidong Li, Jianzhong Wu
Feb 9, 2005·Physical Review Letters·Laurent JolyLydéric Bocquet
Nov 1, 2005·Analytical Chemistry·Sumita Pennathur, Juan G Santiago
Apr 15, 2006·The Journal of Chemical Physics·Felipe Jiménez-AngelesMarcelo Lozada-Cassou
May 23, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Christian D Santangelo
Aug 16, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Kevin T Chu, Martin Z Bazant
Nov 10, 2006·The Journal of Chemical Physics·Robert H Nilson, Stewart K Griffiths
Mar 16, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Mustafa Sabri KilicArmand Ajdari
Mar 16, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Mustafa Sabri KilicArmand Ajdari
May 2, 2007·The Journal of Physical Chemistry. B·Alexei A Kornyshev
May 10, 2008·The Journal of Chemical Physics·Felipe Jiménez-Angeles, Marcelo Lozada-Cassou
Oct 29, 2008·Nature Materials·Patrice Simon, Yury Gogotsi
May 15, 2009·Physical Chemistry Chemical Physics : PCCP·Douglas Henderson, Dezso Boda
Nov 10, 2009·Nature Nanotechnology·W SparreboomJ C T Eijkel
Apr 7, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P M Biesheuvel, M Z Bazant
Mar 17, 2011·Physical Review Letters·Martin Z BazantAlexei A Kornyshev
Oct 21, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Dan Ben-YaakovRudi Podgornik
Oct 6, 2011·The Journal of Physical Chemistry. B·Douglas HendersonJianzhong Wu
Dec 12, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Brian D Storey, Martin Z Bazant
Feb 2, 2013·Science·Jeremie PalacciPaul M Chaikin
May 30, 2013·Proceedings of the National Academy of Sciences of the United States of America·Matthew A GebbieJacob N Israelachvili
Dec 31, 2015·Proceedings of the National Academy of Sciences of the United States of America·Sangwoo ShinHoward A Stone
May 14, 2016·Soft Matter·Darrell VelegolManish Kumar
Jul 14, 2016·Proceedings of the National Academy of Sciences of the United States of America·Anirudha BanerjeeTodd M Squires
Jul 29, 2017·Physical Review Letters·Alpha A LeeSusan Perkin
Dec 9, 2017·The Journal of Physical Chemistry Letters·Nir GavishArik Yochelis
Aug 29, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Ankur Gupta, Howard A Stone
Feb 20, 2020·Physical Review. E·Yael AvniDavid Andelman
Apr 15, 2020·Proceedings of the National Academy of Sciences of the United States of America·Håkan WennerströmMikael Oliveberg
Aug 7, 2020·Soft Matter·Ankur GuptaHoward A Stone
Aug 29, 2020·Physical Review Letters·Ankur GuptaHoward A Stone
Sep 26, 2020·Physical Review Letters·J Pedro de SouzaMartin Z Bazant

❮ Previous
Next ❯

Citations

May 1, 2021·The Journal of Physical Chemistry Letters·Artem BaskinDavid Prendergast
Jul 18, 2021·Physical Review. E·Timur AslyamovIskander Akhatov

❮ 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.