Damage Accumulation in Silica Glass Nanofibers
- Autores
- Bonfanti, Silvia; Ferrero, Ezequiel E.; Sellerio, Alessandro; Guerra, Roberto; Zapperi, Stefano
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The origin of the brittle-to-ductile transition, experimentally observed in amorphous silica nanofibers as the sample size is reduced, is still debated. Here we investigate the issue by extensive molecular dynamics simulations at low and room temperatures for a broad range of sample sizes, with open and periodic boundary conditions. Our results show that small sample-size enhanced ductility is primarily due to diffuse damage accumulation, that for larger samples leads to brittle catastrophic failure. Surface effects such as boundary fluidization contribute to ductility at room temperature by promoting necking, but are not the main driver of the transition. Our results suggest that the experimentally observed size-induced ductility of silica nanofibers is a manifestation of finite-size criticality, as expected in general for quasi-brittle disordered networks.
Fil: Bonfanti, Silvia. Università degli Studi di Milano; Italia
Fil: Ferrero, Ezequiel E.. Università degli Studi di Milano; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Sellerio, Alessandro. Università degli Studi di Milano; Italia
Fil: Guerra, Roberto. Università degli Studi di Milano; Italia
Fil: Zapperi, Stefano. Università degli Studi di Milano; Italia. Consiglio Nazionale delle Ricerche; Italia - Materia
-
DUCTILITY
FRACTURE
NANOFIBERS
NANOWIRES
SILICA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/97132
Ver los metadatos del registro completo
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Damage Accumulation in Silica Glass NanofibersBonfanti, SilviaFerrero, Ezequiel E.Sellerio, AlessandroGuerra, RobertoZapperi, StefanoDUCTILITYFRACTURENANOFIBERSNANOWIRESSILICAhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The origin of the brittle-to-ductile transition, experimentally observed in amorphous silica nanofibers as the sample size is reduced, is still debated. Here we investigate the issue by extensive molecular dynamics simulations at low and room temperatures for a broad range of sample sizes, with open and periodic boundary conditions. Our results show that small sample-size enhanced ductility is primarily due to diffuse damage accumulation, that for larger samples leads to brittle catastrophic failure. Surface effects such as boundary fluidization contribute to ductility at room temperature by promoting necking, but are not the main driver of the transition. Our results suggest that the experimentally observed size-induced ductility of silica nanofibers is a manifestation of finite-size criticality, as expected in general for quasi-brittle disordered networks.Fil: Bonfanti, Silvia. Università degli Studi di Milano; ItaliaFil: Ferrero, Ezequiel E.. Università degli Studi di Milano; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Sellerio, Alessandro. Università degli Studi di Milano; ItaliaFil: Guerra, Roberto. Università degli Studi di Milano; ItaliaFil: Zapperi, Stefano. Università degli Studi di Milano; Italia. Consiglio Nazionale delle Ricerche; ItaliaAmerican Chemical Society2018-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97132Bonfanti, Silvia; Ferrero, Ezequiel E.; Sellerio, Alessandro; Guerra, Roberto; Zapperi, Stefano; Damage Accumulation in Silica Glass Nanofibers; American Chemical Society; Nano Letters; 18; 7; 7-2018; 4100-41061530-6984CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.nanolett.8b00469info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.nanolett.8b00469info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:22Zoai:ri.conicet.gov.ar:11336/97132instacron: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 10:20:23.025CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Damage Accumulation in Silica Glass Nanofibers |
title |
Damage Accumulation in Silica Glass Nanofibers |
spellingShingle |
Damage Accumulation in Silica Glass Nanofibers Bonfanti, Silvia DUCTILITY FRACTURE NANOFIBERS NANOWIRES SILICA |
title_short |
Damage Accumulation in Silica Glass Nanofibers |
title_full |
Damage Accumulation in Silica Glass Nanofibers |
title_fullStr |
Damage Accumulation in Silica Glass Nanofibers |
title_full_unstemmed |
Damage Accumulation in Silica Glass Nanofibers |
title_sort |
Damage Accumulation in Silica Glass Nanofibers |
dc.creator.none.fl_str_mv |
Bonfanti, Silvia Ferrero, Ezequiel E. Sellerio, Alessandro Guerra, Roberto Zapperi, Stefano |
author |
Bonfanti, Silvia |
author_facet |
Bonfanti, Silvia Ferrero, Ezequiel E. Sellerio, Alessandro Guerra, Roberto Zapperi, Stefano |
author_role |
author |
author2 |
Ferrero, Ezequiel E. Sellerio, Alessandro Guerra, Roberto Zapperi, Stefano |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
DUCTILITY FRACTURE NANOFIBERS NANOWIRES SILICA |
topic |
DUCTILITY FRACTURE NANOFIBERS NANOWIRES SILICA |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The origin of the brittle-to-ductile transition, experimentally observed in amorphous silica nanofibers as the sample size is reduced, is still debated. Here we investigate the issue by extensive molecular dynamics simulations at low and room temperatures for a broad range of sample sizes, with open and periodic boundary conditions. Our results show that small sample-size enhanced ductility is primarily due to diffuse damage accumulation, that for larger samples leads to brittle catastrophic failure. Surface effects such as boundary fluidization contribute to ductility at room temperature by promoting necking, but are not the main driver of the transition. Our results suggest that the experimentally observed size-induced ductility of silica nanofibers is a manifestation of finite-size criticality, as expected in general for quasi-brittle disordered networks. Fil: Bonfanti, Silvia. Università degli Studi di Milano; Italia Fil: Ferrero, Ezequiel E.. Università degli Studi di Milano; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina Fil: Sellerio, Alessandro. Università degli Studi di Milano; Italia Fil: Guerra, Roberto. Università degli Studi di Milano; Italia Fil: Zapperi, Stefano. Università degli Studi di Milano; Italia. Consiglio Nazionale delle Ricerche; Italia |
description |
The origin of the brittle-to-ductile transition, experimentally observed in amorphous silica nanofibers as the sample size is reduced, is still debated. Here we investigate the issue by extensive molecular dynamics simulations at low and room temperatures for a broad range of sample sizes, with open and periodic boundary conditions. Our results show that small sample-size enhanced ductility is primarily due to diffuse damage accumulation, that for larger samples leads to brittle catastrophic failure. Surface effects such as boundary fluidization contribute to ductility at room temperature by promoting necking, but are not the main driver of the transition. Our results suggest that the experimentally observed size-induced ductility of silica nanofibers is a manifestation of finite-size criticality, as expected in general for quasi-brittle disordered networks. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-07 |
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/11336/97132 Bonfanti, Silvia; Ferrero, Ezequiel E.; Sellerio, Alessandro; Guerra, Roberto; Zapperi, Stefano; Damage Accumulation in Silica Glass Nanofibers; American Chemical Society; Nano Letters; 18; 7; 7-2018; 4100-4106 1530-6984 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/97132 |
identifier_str_mv |
Bonfanti, Silvia; Ferrero, Ezequiel E.; Sellerio, Alessandro; Guerra, Roberto; Zapperi, Stefano; Damage Accumulation in Silica Glass Nanofibers; American Chemical Society; Nano Letters; 18; 7; 7-2018; 4100-4106 1530-6984 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.nanolett.8b00469 info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.nanolett.8b00469 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
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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 |