The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity

Autores
Rosandi, Yudi; Grossi, Joás Santiago; Bringa, Eduardo Marcial; Urbassek, Herbert M.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The incidence of energetic laser pulses on a metal foam may lead to foam ablation. The processes occurring in the foam may differ strongly from those in a bulk metal: The absorption of laser light, energy transfer to the atomic system, heat conduction, and finally, the atomistic processes-such as melting or evaporation-may be different. In addition, novel phenomena take place, such as a reorganization of the ligament network in the foam. We study all these processes in an Au foam of average porosity 79% and an average ligament diameter of 2.5 nm, using molecular dynamics simulation. The coupling of the electronic system to the atomic system is modeled by using the electron-phonon coupling, g, and the electronic heat diffusivity, κe, as model parameters, since their actual values for foams are unknown. We show that the foam coarsens under laser irradiation. While κe governs the homogeneity of the processes, g mainly determines their time scale. The final porosity reached is independent of the value of g.
Fil: Rosandi, Yudi. Universitas Padjadjaran; Indonesia
Fil: Grossi, Joás Santiago. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Urbassek, Herbert M.. Universitat Kaiserslauter; Alemania
Materia
LASER
SHOCK
FOAM
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:11336/90533
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivityRosandi, YudiGrossi, Joás SantiagoBringa, Eduardo MarcialUrbassek, Herbert M.LASERSHOCKFOAMhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The incidence of energetic laser pulses on a metal foam may lead to foam ablation. The processes occurring in the foam may differ strongly from those in a bulk metal: The absorption of laser light, energy transfer to the atomic system, heat conduction, and finally, the atomistic processes-such as melting or evaporation-may be different. In addition, novel phenomena take place, such as a reorganization of the ligament network in the foam. We study all these processes in an Au foam of average porosity 79% and an average ligament diameter of 2.5 nm, using molecular dynamics simulation. The coupling of the electronic system to the atomic system is modeled by using the electron-phonon coupling, g, and the electronic heat diffusivity, κe, as model parameters, since their actual values for foams are unknown. We show that the foam coarsens under laser irradiation. While κe governs the homogeneity of the processes, g mainly determines their time scale. The final porosity reached is independent of the value of g.Fil: Rosandi, Yudi. Universitas Padjadjaran; IndonesiaFil: Grossi, Joás Santiago. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Urbassek, Herbert M.. Universitat Kaiserslauter; AlemaniaAmerican Institute of Physics2018-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/90533Rosandi, Yudi; Grossi, Joás Santiago; Bringa, Eduardo Marcial; Urbassek, Herbert M.; The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity; American Institute of Physics; Journal of Applied Physics; 123; 3; 1-2018; 1-80021-8979CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1063/1.5012594info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.5012594info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:58:47Zoai:ri.conicet.gov.ar:11336/90533instacron: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:34982025-11-12 09:58:48.042CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
title The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
spellingShingle The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
Rosandi, Yudi
LASER
SHOCK
FOAM
title_short The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
title_full The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
title_fullStr The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
title_full_unstemmed The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
title_sort The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity
dc.creator.none.fl_str_mv Rosandi, Yudi
Grossi, Joás Santiago
Bringa, Eduardo Marcial
Urbassek, Herbert M.
author Rosandi, Yudi
author_facet Rosandi, Yudi
Grossi, Joás Santiago
Bringa, Eduardo Marcial
Urbassek, Herbert M.
author_role author
author2 Grossi, Joás Santiago
Bringa, Eduardo Marcial
Urbassek, Herbert M.
author2_role author
author
author
dc.subject.none.fl_str_mv LASER
SHOCK
FOAM
topic LASER
SHOCK
FOAM
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The incidence of energetic laser pulses on a metal foam may lead to foam ablation. The processes occurring in the foam may differ strongly from those in a bulk metal: The absorption of laser light, energy transfer to the atomic system, heat conduction, and finally, the atomistic processes-such as melting or evaporation-may be different. In addition, novel phenomena take place, such as a reorganization of the ligament network in the foam. We study all these processes in an Au foam of average porosity 79% and an average ligament diameter of 2.5 nm, using molecular dynamics simulation. The coupling of the electronic system to the atomic system is modeled by using the electron-phonon coupling, g, and the electronic heat diffusivity, κe, as model parameters, since their actual values for foams are unknown. We show that the foam coarsens under laser irradiation. While κe governs the homogeneity of the processes, g mainly determines their time scale. The final porosity reached is independent of the value of g.
Fil: Rosandi, Yudi. Universitas Padjadjaran; Indonesia
Fil: Grossi, Joás Santiago. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Urbassek, Herbert M.. Universitat Kaiserslauter; Alemania
description The incidence of energetic laser pulses on a metal foam may lead to foam ablation. The processes occurring in the foam may differ strongly from those in a bulk metal: The absorption of laser light, energy transfer to the atomic system, heat conduction, and finally, the atomistic processes-such as melting or evaporation-may be different. In addition, novel phenomena take place, such as a reorganization of the ligament network in the foam. We study all these processes in an Au foam of average porosity 79% and an average ligament diameter of 2.5 nm, using molecular dynamics simulation. The coupling of the electronic system to the atomic system is modeled by using the electron-phonon coupling, g, and the electronic heat diffusivity, κe, as model parameters, since their actual values for foams are unknown. We show that the foam coarsens under laser irradiation. While κe governs the homogeneity of the processes, g mainly determines their time scale. The final porosity reached is independent of the value of g.
publishDate 2018
dc.date.none.fl_str_mv 2018-01
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/11336/90533
Rosandi, Yudi; Grossi, Joás Santiago; Bringa, Eduardo Marcial; Urbassek, Herbert M.; The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity; American Institute of Physics; Journal of Applied Physics; 123; 3; 1-2018; 1-8
0021-8979
CONICET Digital
CONICET
url http://hdl.handle.net/11336/90533
identifier_str_mv Rosandi, Yudi; Grossi, Joás Santiago; Bringa, Eduardo Marcial; Urbassek, Herbert M.; The Laser ablation of a metal foam: The role of electron-phonon coupling and electronic heat diffusivity; American Institute of Physics; Journal of Applied Physics; 123; 3; 1-2018; 1-8
0021-8979
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5012594
info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.5012594
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 American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
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_ 1848598423151837184
score 12.976206

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