In-situ transmission electron microscopy growth of nanoparticles under extreme conditions

Detalhes bibliográficos
Autor(a) principal: Luce, Flavia Piegas
Data de Publicação: 2016
Outros Autores: Oliviero, Erwan Marie Hubert, Azevedo, Gustavo de Medeiros, Baptista, Daniel Lorscheitter, Fichtner, Paulo Fernando Papaleo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/141288
Resumo: The formation and time resolved behavior of individual Pb nanoparticles embedded in silica have been studied by in-situ transmission electron microscopy observations at high temperatures (400–1100 C) and under 200 keV electron irradiation. It is shown that under such extreme conditions, nanoparticles can migrate at long distances presenting a Brownian-like behavior and eventually coalesce. The particle migration phenomenon is discussed considering the influence of the thermal energy and the electron irradiation effects on the atomic diffusion process which is shown to control particle migration. These results and comparison with ex-situ experiments tackle the stability and the microstructure evolution of nanoparticles systems under extreme conditions. It elucidates on the effects of energetic particle irradiation-annealing treatments either as a tool or as a detrimental issue that could hamper their long-term applications in radiation-harsh environments such as in space or nuclear sectors.
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spelling Luce, Flavia PiegasOliviero, Erwan Marie HubertAzevedo, Gustavo de MedeirosBaptista, Daniel LorscheitterFichtner, Paulo Fernando Papaleo2016-05-19T02:09:24Z20160021-8979http://hdl.handle.net/10183/141288000991258The formation and time resolved behavior of individual Pb nanoparticles embedded in silica have been studied by in-situ transmission electron microscopy observations at high temperatures (400–1100 C) and under 200 keV electron irradiation. It is shown that under such extreme conditions, nanoparticles can migrate at long distances presenting a Brownian-like behavior and eventually coalesce. The particle migration phenomenon is discussed considering the influence of the thermal energy and the electron irradiation effects on the atomic diffusion process which is shown to control particle migration. These results and comparison with ex-situ experiments tackle the stability and the microstructure evolution of nanoparticles systems under extreme conditions. It elucidates on the effects of energetic particle irradiation-annealing treatments either as a tool or as a detrimental issue that could hamper their long-term applications in radiation-harsh environments such as in space or nuclear sectors.application/pdfengJournal of applied physics. New York. Vol. 119, no. 3 (Jan. 2016), 035901, 6 p.NanopartículasEfeitos da radiaçãoMicroscopia eletrônica de transmissãoIn-situ transmission electron microscopy growth of nanoparticles under extreme conditionsEstrangeiroinfo: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:UFRGSORIGINAL000991258.pdf000991258.pdfTexto completo (inglês)application/pdf1723767http://www.lume.ufrgs.br/bitstream/10183/141288/1/000991258.pdf08d1e9c41a9b349b8dfea746b8b418acMD51TEXT000991258.pdf.txt000991258.pdf.txtExtracted Texttext/plain26692http://www.lume.ufrgs.br/bitstream/10183/141288/2/000991258.pdf.txt945a642247650a89abfc0db0a02266dfMD52THUMBNAIL000991258.pdf.jpg000991258.pdf.jpgGenerated Thumbnailimage/jpeg2132http://www.lume.ufrgs.br/bitstream/10183/141288/3/000991258.pdf.jpgffd176e879fe2ec18809066a58fc558aMD5310183/1412882023-07-29 03:34:35.463605oai:www.lume.ufrgs.br:10183/141288Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-29T06:34:35Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
title In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
spellingShingle In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
Luce, Flavia Piegas
Nanopartículas
Efeitos da radiação
Microscopia eletrônica de transmissão
title_short In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
title_full In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
title_fullStr In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
title_full_unstemmed In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
title_sort In-situ transmission electron microscopy growth of nanoparticles under extreme conditions
author Luce, Flavia Piegas
author_facet Luce, Flavia Piegas
Oliviero, Erwan Marie Hubert
Azevedo, Gustavo de Medeiros
Baptista, Daniel Lorscheitter
Fichtner, Paulo Fernando Papaleo
author_role author
author2 Oliviero, Erwan Marie Hubert
Azevedo, Gustavo de Medeiros
Baptista, Daniel Lorscheitter
Fichtner, Paulo Fernando Papaleo
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Luce, Flavia Piegas
Oliviero, Erwan Marie Hubert
Azevedo, Gustavo de Medeiros
Baptista, Daniel Lorscheitter
Fichtner, Paulo Fernando Papaleo
dc.subject.por.fl_str_mv Nanopartículas
Efeitos da radiação
Microscopia eletrônica de transmissão
topic Nanopartículas
Efeitos da radiação
Microscopia eletrônica de transmissão
description The formation and time resolved behavior of individual Pb nanoparticles embedded in silica have been studied by in-situ transmission electron microscopy observations at high temperatures (400–1100 C) and under 200 keV electron irradiation. It is shown that under such extreme conditions, nanoparticles can migrate at long distances presenting a Brownian-like behavior and eventually coalesce. The particle migration phenomenon is discussed considering the influence of the thermal energy and the electron irradiation effects on the atomic diffusion process which is shown to control particle migration. These results and comparison with ex-situ experiments tackle the stability and the microstructure evolution of nanoparticles systems under extreme conditions. It elucidates on the effects of energetic particle irradiation-annealing treatments either as a tool or as a detrimental issue that could hamper their long-term applications in radiation-harsh environments such as in space or nuclear sectors.
publishDate 2016
dc.date.accessioned.fl_str_mv 2016-05-19T02:09:24Z
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Journal of applied physics. New York. Vol. 119, no. 3 (Jan. 2016), 035901, 6 p.
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