Screened Coulomb interactions of general macroions with nonzero particle volume
Everts, Jeffrey Christopher (Author)

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A semianalytical approach is developed to calculate the effective pair potential of rigid arbitrarily shaped macroions with a nonvanishing particle volume, valid within linear screening theory and the mean-field approximation. The essential ingredient for this framework is a mapping of the particle to a singular charge distribution with adjustable effective charge and shape parameters determined by the particle surface electrostatic potential. For charged spheres, this method reproduces the well-known Derjaguin- andau-Verwey-Overbeek (DLVO) potential. Further exemplary benchmarks of the method for more complicated cases, like tori, triaxial ellipsoids, and additive torus-sphere mixtures, leads to accurate closed-form integral expressions for all particle separations and orientations. The findings are relevant for determining the phase behavior of macroions with experiments and simulations for various particle shapes.

Keywords:soft matter physics, electrostatics, electrostatic potential, macroions
Tipology:1.01 - Original Scientific Article
Organization:FMF - Faculty of Mathematics and Physics
Number of pages:str. 033144-1-033144-13
Numbering:Vol. 2, iss. 3
ISSN on article:2643-1564
DOI:10.1103/PhysRevResearch.2.033144 This link opens in a new window
COBISS.SI-ID:23873539 This link opens in a new window
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Record is a part of a journal

Title:Physical review research
Publisher:American Phyisical Society
COBISS.SI-ID:32822823 This link opens in a new window

Document is financed by a project

Funder:EC - European Commission
Funding Programme:H2020
Project no.:795377
Name:Topological Colloidal Double Layers

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:J1-9149
Name:Orientacijske interakcije v posplošenem Thomsonovem problemu: dipolna stabilizacija sferičnih nanostruktur


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:29.07.2020

Secondary language

Keywords:fizika mehke snovi, elektrostatika, elektrostatski potencial, makroioni

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