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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/140431
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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 Técnicas2025-09-29T10:47:45Zoai: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:34982025-09-29 10:47:45.384CONICET 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 |
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13.070432 |