Pattern formation in two-component monolayers of particles with competing interactions

Autores
Ciach, Alina; De Virgiliis, Andrés; Meyra, Ariel Germán; Litniewski, Marek
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Competing interactions between charged inclusions in membranes of living organisms or charged nanoparticles in near-critical mixtures can lead to self-assembly into various patterns. Motivated by these systems, we developed a simple triangular lattice model for binary mixtures of oppositely charged particles with additional short-range attraction or repulsion between like or different particles, respectively. We determined the ground state for the system in contact with a reservoir of the particles for the whole chemical potentials plane, and the structure of self-assembled conglomerates for fixed numbers of particles. Stability of the low-temperature ordered patterns was verified by Monte Carlo simulations. In addition, we performed molecular dynamics simulations for a continuous model with interactions having similar features, but a larger range and lower strength than in the lattice model. Interactions with and without symmetry between different components were assumed. We investigated both the conglomerate formed in the center of a thin slit with repulsive walls, and the structure of a monolayer adsorbed at an attractive substrate. Both models give the same patterns for large chemical potentials or densities. For low densities, more patterns occur in the lattice model. Different phases coexist with dilute gas on the lattice and in the continuum, leading to different patterns in self-assembled conglomerates (‘rafts’).
Instituto de Física de Líquidos y Sistemas Biológicos
Facultad de Ingeniería
Materia
Química
Física
Mixture of charged particles
Competing interactions
Self-assembly
Pattern formation
Thermodynamic casimir potential
Molecular modeling
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/154459

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Pattern formation in two-component monolayers of particles with competing interactionsCiach, AlinaDe Virgiliis, AndrésMeyra, Ariel GermánLitniewski, MarekQuímicaFísicaMixture of charged particlesCompeting interactionsSelf-assemblyPattern formationThermodynamic casimir potentialMolecular modelingCompeting interactions between charged inclusions in membranes of living organisms or charged nanoparticles in near-critical mixtures can lead to self-assembly into various patterns. Motivated by these systems, we developed a simple triangular lattice model for binary mixtures of oppositely charged particles with additional short-range attraction or repulsion between like or different particles, respectively. We determined the ground state for the system in contact with a reservoir of the particles for the whole chemical potentials plane, and the structure of self-assembled conglomerates for fixed numbers of particles. Stability of the low-temperature ordered patterns was verified by Monte Carlo simulations. In addition, we performed molecular dynamics simulations for a continuous model with interactions having similar features, but a larger range and lower strength than in the lattice model. Interactions with and without symmetry between different components were assumed. We investigated both the conglomerate formed in the center of a thin slit with repulsive walls, and the structure of a monolayer adsorbed at an attractive substrate. Both models give the same patterns for large chemical potentials or densities. For low densities, more patterns occur in the lattice model. Different phases coexist with dilute gas on the lattice and in the continuum, leading to different patterns in self-assembled conglomerates (‘rafts’).Instituto de Física de Líquidos y Sistemas BiológicosFacultad de Ingeniería2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/154459enginfo:eu-repo/semantics/altIdentifier/issn/1420-3049info:eu-repo/semantics/altIdentifier/doi/10.3390/molecules28031366info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:40:03Zoai:sedici.unlp.edu.ar:10915/154459Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:40:03.377SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Pattern formation in two-component monolayers of particles with competing interactions
title Pattern formation in two-component monolayers of particles with competing interactions
spellingShingle Pattern formation in two-component monolayers of particles with competing interactions
Ciach, Alina
Química
Física
Mixture of charged particles
Competing interactions
Self-assembly
Pattern formation
Thermodynamic casimir potential
Molecular modeling
title_short Pattern formation in two-component monolayers of particles with competing interactions
title_full Pattern formation in two-component monolayers of particles with competing interactions
title_fullStr Pattern formation in two-component monolayers of particles with competing interactions
title_full_unstemmed Pattern formation in two-component monolayers of particles with competing interactions
title_sort Pattern formation in two-component monolayers of particles with competing interactions
dc.creator.none.fl_str_mv Ciach, Alina
De Virgiliis, Andrés
Meyra, Ariel Germán
Litniewski, Marek
author Ciach, Alina
author_facet Ciach, Alina
De Virgiliis, Andrés
Meyra, Ariel Germán
Litniewski, Marek
author_role author
author2 De Virgiliis, Andrés
Meyra, Ariel Germán
Litniewski, Marek
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Física
Mixture of charged particles
Competing interactions
Self-assembly
Pattern formation
Thermodynamic casimir potential
Molecular modeling
topic Química
Física
Mixture of charged particles
Competing interactions
Self-assembly
Pattern formation
Thermodynamic casimir potential
Molecular modeling
dc.description.none.fl_txt_mv Competing interactions between charged inclusions in membranes of living organisms or charged nanoparticles in near-critical mixtures can lead to self-assembly into various patterns. Motivated by these systems, we developed a simple triangular lattice model for binary mixtures of oppositely charged particles with additional short-range attraction or repulsion between like or different particles, respectively. We determined the ground state for the system in contact with a reservoir of the particles for the whole chemical potentials plane, and the structure of self-assembled conglomerates for fixed numbers of particles. Stability of the low-temperature ordered patterns was verified by Monte Carlo simulations. In addition, we performed molecular dynamics simulations for a continuous model with interactions having similar features, but a larger range and lower strength than in the lattice model. Interactions with and without symmetry between different components were assumed. We investigated both the conglomerate formed in the center of a thin slit with repulsive walls, and the structure of a monolayer adsorbed at an attractive substrate. Both models give the same patterns for large chemical potentials or densities. For low densities, more patterns occur in the lattice model. Different phases coexist with dilute gas on the lattice and in the continuum, leading to different patterns in self-assembled conglomerates (‘rafts’).
Instituto de Física de Líquidos y Sistemas Biológicos
Facultad de Ingeniería
description Competing interactions between charged inclusions in membranes of living organisms or charged nanoparticles in near-critical mixtures can lead to self-assembly into various patterns. Motivated by these systems, we developed a simple triangular lattice model for binary mixtures of oppositely charged particles with additional short-range attraction or repulsion between like or different particles, respectively. We determined the ground state for the system in contact with a reservoir of the particles for the whole chemical potentials plane, and the structure of self-assembled conglomerates for fixed numbers of particles. Stability of the low-temperature ordered patterns was verified by Monte Carlo simulations. In addition, we performed molecular dynamics simulations for a continuous model with interactions having similar features, but a larger range and lower strength than in the lattice model. Interactions with and without symmetry between different components were assumed. We investigated both the conglomerate formed in the center of a thin slit with repulsive walls, and the structure of a monolayer adsorbed at an attractive substrate. Both models give the same patterns for large chemical potentials or densities. For low densities, more patterns occur in the lattice model. Different phases coexist with dilute gas on the lattice and in the continuum, leading to different patterns in self-assembled conglomerates (‘rafts’).
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/154459
url http://sedici.unlp.edu.ar/handle/10915/154459
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1420-3049
info:eu-repo/semantics/altIdentifier/doi/10.3390/molecules28031366
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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