Collisions between amorphous carbon nanoparticles: Phase transformations

Autores
Nietiadi, Maureen L.; Valencia, Felipe; Gonzalez, Rafael I.; Bringa, Eduardo Marcial; Urbassek, Herbert M.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks. Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these processes in amorphous carbon NPs. Methods. Using molecular-dynamics simulations, we studied central collisions between amorphous carbon NPs that had radii in the range of 6.5-20 nm and velocities of 100-3000 ms..1, and with varying sp3 content (20-55%). Results. We find that the collisions are always sticking. The contact radius formed surpasses the estimate provided by the traditional Johnson-Kendall-Roberts model, pointing at the dominant influence of attractive forces between the NPs. Plasticity occurs via sheartransformation zones. In addition, we find bond rearrangements in the collision zone. Low-sp3 material (sp3 ≤ 40%) is compressed to sp3 > 50%. On the other hand, for the highest sp3 fraction, 55%, graphitization starts in the collision zone leading to low-density and even porous material. Conclusions. Collisions of amorphous carbon NPs lead to an increased porosity, atomic surface roughness, and changed hybridization that affect the mechanical and optical properties of the collided NPs.
Fil: Nietiadi, Maureen L.. Technische Universität Kaiserslautern; Alemania
Fil: Valencia, Felipe. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad Mayor; Chile
Fil: Gonzalez, Rafael I.. Universidad Mayor; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile
Fil: Bringa, Eduardo Marcial. Universidad de Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Mayor; Chile
Fil: Urbassek, Herbert M.. Technische Universität Kaiserslautern; Alemania
Materia
METHODS: NUMERICAL
PLANETS AND SATELLITES: FORMATION
PROTOPLANETARY DISKS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/140431
Acceder
id CONICETDig_919b187a63f107d85064cb55184b4cc7
oai_identifier_str oai:ri.conicet.gov.ar:11336/140431
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Collisions between amorphous carbon nanoparticles: Phase transformationsNietiadi, Maureen L.Valencia, FelipeGonzalez, Rafael I.Bringa, Eduardo MarcialUrbassek, Herbert M.METHODS: NUMERICALPLANETS AND SATELLITES: FORMATIONPROTOPLANETARY DISKShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks. Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these processes in amorphous carbon NPs. Methods. Using molecular-dynamics simulations, we studied central collisions between amorphous carbon NPs that had radii in the range of 6.5-20 nm and velocities of 100-3000 ms..1, and with varying sp3 content (20-55%). Results. We find that the collisions are always sticking. The contact radius formed surpasses the estimate provided by the traditional Johnson-Kendall-Roberts model, pointing at the dominant influence of attractive forces between the NPs. Plasticity occurs via sheartransformation zones. In addition, we find bond rearrangements in the collision zone. Low-sp3 material (sp3 ≤ 40%) is compressed to sp3 > 50%. On the other hand, for the highest sp3 fraction, 55%, graphitization starts in the collision zone leading to low-density and even porous material. Conclusions. Collisions of amorphous carbon NPs lead to an increased porosity, atomic surface roughness, and changed hybridization that affect the mechanical and optical properties of the collided NPs.Fil: Nietiadi, Maureen L.. Technische Universität Kaiserslautern; AlemaniaFil: Valencia, Felipe. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad Mayor; ChileFil: Gonzalez, Rafael I.. Universidad Mayor; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; ChileFil: Bringa, Eduardo Marcial. Universidad de Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Mayor; ChileFil: Urbassek, Herbert M.. Technische Universität Kaiserslautern; AlemaniaEDP Sciences2020-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/140431Nietiadi, Maureen L.; Valencia, Felipe; Gonzalez, Rafael I.; Bringa, Eduardo Marcial; Urbassek, Herbert M.; Collisions between amorphous carbon nanoparticles: Phase transformations; EDP Sciences; Astronomy and Astrophysics; 641; 9-2020; 1-100004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202038183info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2020/09/aa38183-20/aa38183-20.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:21:43Zoai:ri.conicet.gov.ar:11336/140431instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:21:43.949CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Collisions between amorphous carbon nanoparticles: Phase transformations
title Collisions between amorphous carbon nanoparticles: Phase transformations
spellingShingle Collisions between amorphous carbon nanoparticles: Phase transformations
Nietiadi, Maureen L.
METHODS: NUMERICAL
PLANETS AND SATELLITES: FORMATION
PROTOPLANETARY DISKS
title_short Collisions between amorphous carbon nanoparticles: Phase transformations
title_full Collisions between amorphous carbon nanoparticles: Phase transformations
title_fullStr Collisions between amorphous carbon nanoparticles: Phase transformations
title_full_unstemmed Collisions between amorphous carbon nanoparticles: Phase transformations
title_sort Collisions between amorphous carbon nanoparticles: Phase transformations
dc.creator.none.fl_str_mv Nietiadi, Maureen L.
Valencia, Felipe
Gonzalez, Rafael I.
Bringa, Eduardo Marcial
Urbassek, Herbert M.
author Nietiadi, Maureen L.
author_facet Nietiadi, Maureen L.
Valencia, Felipe
Gonzalez, Rafael I.
Bringa, Eduardo Marcial
Urbassek, Herbert M.
author_role author
author2 Valencia, Felipe
Gonzalez, Rafael I.
Bringa, Eduardo Marcial
Urbassek, Herbert M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv METHODS: NUMERICAL
PLANETS AND SATELLITES: FORMATION
PROTOPLANETARY DISKS
topic METHODS: NUMERICAL
PLANETS AND SATELLITES: FORMATION
PROTOPLANETARY DISKS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks. Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these processes in amorphous carbon NPs. Methods. Using molecular-dynamics simulations, we studied central collisions between amorphous carbon NPs that had radii in the range of 6.5-20 nm and velocities of 100-3000 ms..1, and with varying sp3 content (20-55%). Results. We find that the collisions are always sticking. The contact radius formed surpasses the estimate provided by the traditional Johnson-Kendall-Roberts model, pointing at the dominant influence of attractive forces between the NPs. Plasticity occurs via sheartransformation zones. In addition, we find bond rearrangements in the collision zone. Low-sp3 material (sp3 ≤ 40%) is compressed to sp3 > 50%. On the other hand, for the highest sp3 fraction, 55%, graphitization starts in the collision zone leading to low-density and even porous material. Conclusions. Collisions of amorphous carbon NPs lead to an increased porosity, atomic surface roughness, and changed hybridization that affect the mechanical and optical properties of the collided NPs.
Fil: Nietiadi, Maureen L.. Technische Universität Kaiserslautern; Alemania
Fil: Valencia, Felipe. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad Mayor; Chile
Fil: Gonzalez, Rafael I.. Universidad Mayor; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile
Fil: Bringa, Eduardo Marcial. Universidad de Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Mayor; Chile
Fil: Urbassek, Herbert M.. Technische Universität Kaiserslautern; Alemania
description Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks. Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these processes in amorphous carbon NPs. Methods. Using molecular-dynamics simulations, we studied central collisions between amorphous carbon NPs that had radii in the range of 6.5-20 nm and velocities of 100-3000 ms..1, and with varying sp3 content (20-55%). Results. We find that the collisions are always sticking. The contact radius formed surpasses the estimate provided by the traditional Johnson-Kendall-Roberts model, pointing at the dominant influence of attractive forces between the NPs. Plasticity occurs via sheartransformation zones. In addition, we find bond rearrangements in the collision zone. Low-sp3 material (sp3 ≤ 40%) is compressed to sp3 > 50%. On the other hand, for the highest sp3 fraction, 55%, graphitization starts in the collision zone leading to low-density and even porous material. Conclusions. Collisions of amorphous carbon NPs lead to an increased porosity, atomic surface roughness, and changed hybridization that affect the mechanical and optical properties of the collided NPs.
publishDate 2020
dc.date.none.fl_str_mv 2020-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/140431
Nietiadi, Maureen L.; Valencia, Felipe; Gonzalez, Rafael I.; Bringa, Eduardo Marcial; Urbassek, Herbert M.; Collisions between amorphous carbon nanoparticles: Phase transformations; EDP Sciences; Astronomy and Astrophysics; 641; 9-2020; 1-10
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/140431
identifier_str_mv Nietiadi, Maureen L.; Valencia, Felipe; Gonzalez, Rafael I.; Bringa, Eduardo Marcial; Urbassek, Herbert M.; Collisions between amorphous carbon nanoparticles: Phase transformations; EDP Sciences; Astronomy and Astrophysics; 641; 9-2020; 1-10
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202038183
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2020/09/aa38183-20/aa38183-20.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846782665704865792
score 12.982451

Publicaciones similares