Waterlike anomalies in a two-dimensional core-softened potential
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/178152 |
Resumo: | We investigate the structural, thermodynamic, and dynamic behavior of a two-dimensional (2D) core-corona system using Langevin dynamics simulations. The particles are modeled by employing a core-softened potential which exhibits waterlike anomalies in three dimensions. In previous studies in a quasi-2D system a new region in the pressure versus temperature phase diagram of structural anomalies was observed. Here we show that for the two-dimensional case two regions in the pressure versus temperature phase diagram with structural, density, and diffusion anomalies are observed. Our findings indicate that, while the anomalous region at lower densities is due the competition between the two length scales in the potential at higher densities, the anomalous region is related to the reentrance of the melting line. |
id |
UFRGS-2_6ab67b6e39d977ef0f4a8cdaf4f84167 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/178152 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Bordin, José RafaelBarbosa, Marcia Cristina Bernardes2018-05-11T02:34:01Z20181539-3755http://hdl.handle.net/10183/178152001063341We investigate the structural, thermodynamic, and dynamic behavior of a two-dimensional (2D) core-corona system using Langevin dynamics simulations. The particles are modeled by employing a core-softened potential which exhibits waterlike anomalies in three dimensions. In previous studies in a quasi-2D system a new region in the pressure versus temperature phase diagram of structural anomalies was observed. Here we show that for the two-dimensional case two regions in the pressure versus temperature phase diagram with structural, density, and diffusion anomalies are observed. Our findings indicate that, while the anomalous region at lower densities is due the competition between the two length scales in the potential at higher densities, the anomalous region is related to the reentrance of the melting line.application/pdfengPhysical review. E, Statistical, nonlinear, and soft matter physics. Melville. Vol. 97, no. 2 (Feb. 2018), 022604, 6 p.Diagramas de faseAnomaliasFluidosWaterlike anomalies in a two-dimensional core-softened potentialEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001063341.pdf001063341.pdfTexto completo (inglês)application/pdf946533http://www.lume.ufrgs.br/bitstream/10183/178152/1/001063341.pdfa591ec33181a2c65db7e6c862179534dMD51TEXT001063341.pdf.txt001063341.pdf.txtExtracted Texttext/plain29573http://www.lume.ufrgs.br/bitstream/10183/178152/2/001063341.pdf.txt712153328bac34f43beef4cff26d2119MD5210183/1781522024-02-07 06:01:23.429305oai:www.lume.ufrgs.br:10183/178152Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-02-07T08:01:23Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Waterlike anomalies in a two-dimensional core-softened potential |
title |
Waterlike anomalies in a two-dimensional core-softened potential |
spellingShingle |
Waterlike anomalies in a two-dimensional core-softened potential Bordin, José Rafael Diagramas de fase Anomalias Fluidos |
title_short |
Waterlike anomalies in a two-dimensional core-softened potential |
title_full |
Waterlike anomalies in a two-dimensional core-softened potential |
title_fullStr |
Waterlike anomalies in a two-dimensional core-softened potential |
title_full_unstemmed |
Waterlike anomalies in a two-dimensional core-softened potential |
title_sort |
Waterlike anomalies in a two-dimensional core-softened potential |
author |
Bordin, José Rafael |
author_facet |
Bordin, José Rafael Barbosa, Marcia Cristina Bernardes |
author_role |
author |
author2 |
Barbosa, Marcia Cristina Bernardes |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Bordin, José Rafael Barbosa, Marcia Cristina Bernardes |
dc.subject.por.fl_str_mv |
Diagramas de fase Anomalias Fluidos |
topic |
Diagramas de fase Anomalias Fluidos |
description |
We investigate the structural, thermodynamic, and dynamic behavior of a two-dimensional (2D) core-corona system using Langevin dynamics simulations. The particles are modeled by employing a core-softened potential which exhibits waterlike anomalies in three dimensions. In previous studies in a quasi-2D system a new region in the pressure versus temperature phase diagram of structural anomalies was observed. Here we show that for the two-dimensional case two regions in the pressure versus temperature phase diagram with structural, density, and diffusion anomalies are observed. Our findings indicate that, while the anomalous region at lower densities is due the competition between the two length scales in the potential at higher densities, the anomalous region is related to the reentrance of the melting line. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-05-11T02:34:01Z |
dc.date.issued.fl_str_mv |
2018 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/178152 |
dc.identifier.issn.pt_BR.fl_str_mv |
1539-3755 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001063341 |
identifier_str_mv |
1539-3755 001063341 |
url |
http://hdl.handle.net/10183/178152 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. E, Statistical, nonlinear, and soft matter physics. Melville. Vol. 97, no. 2 (Feb. 2018), 022604, 6 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/178152/1/001063341.pdf http://www.lume.ufrgs.br/bitstream/10183/178152/2/001063341.pdf.txt |
bitstream.checksum.fl_str_mv |
a591ec33181a2c65db7e6c862179534d 712153328bac34f43beef4cff26d2119 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1815447661378011136 |