Evidence map›Paper›PMID 21929014›Full record

ArticlePhysical review. E, Statistical, nonlinear, and soft matter physics2011

Mean-field description of ionic size effects with nonuniform ionic sizes: a numerical approach.

Shenggao Zhou, Zhongming Wang, Bo Li

Abstract read
In one paragraph

Article in Physical review. E, Statistical, nonlinear, and soft matter physics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

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20citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Variational Implicit Solvation with Poisson-Boltzmann Theory.Journal of chemical theory and computation · 2014
    Article
  7. Article
  8. Gradient Models in Molecular Biophysics: Progress, Challenges, Opportunities.Journal of the mechanical behavior of materials · 2013
    Article
  9. Article
  10. Review
  11. Article
  12. Motion of a Cylindrical Dielectric Boundary.SIAM journal on applied mathematics · 2013
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Shenggao ZhouDepartment of Mathematics, Zhejiang University, No. 38 Zheda Road, Hangzhou, 310027, PR China. s4zhou@math.ucsd.edu
Zhongming Wang
Bo Li

Funding

Level-Set Variational Implicit-Solvent Approach to Biomolecular InteractionsR01GM096188 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LI, BO · 2010 to 2013
$1.2M
NIGMS NIH HHS R01 GM096188NIGMS NIH HHS R01GM096188
6 · The paper itself

Abstract

Ionic size effects are significant in many biological systems. Mean-field descriptions of such effects can be efficient but also challenging. When ionic sizes are different, explicit formulas in such descriptions are not available for the dependence of the ionic concentrations on the electrostatic potential, that is, there is no explicit Boltzmann-type distributions. This work begins with a variational formulation of the continuum electrostatics of an ionic solution with such nonuniform ionic sizes as well as multiple ionic valences. An augmented Lagrange multiplier method is then developed and implemented to numerically solve the underlying constrained optimization problem. The method is shown to be accurate and efficient, and is applied to ionic systems with nonuniform ionic sizes such as the sodium chloride solution. Extensive numerical tests demonstrate that the mean-field model and numerical method capture qualitatively some significant ionic size effects, particularly those for multivalent ionic solutions, such as the stratification of multivalent counterions near a charged surface. The ionic valence-to-volume ratio is found to be the key physical parameter in the stratification of concentrations. All these are not well described by the classical Poisson-Boltzmann theory, or the generalized Poisson-Boltzmann theory that treats uniform ionic sizes. Finally, various issues such as the close packing, limitation of the continuum model, and generalization of this work to molecular solvation are discussed.

Indexed as

Models, TheoreticalStatic ElectricityIonsSolutionsThermodynamicsIonsSolutions

Identifiers

PMID21929014
PMCPMC3727298

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.