RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | REM. Revista Escola de Minas (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672011000200009 |
Resumo: | Laser irradiation of powdered iron oxides (goethite and hematite) was performed in order to obtain information about their interaction with short duration near-infrared pulses. Results have shown that under some conditions, Nd:YAG laser provides enough energy to induce fast chemical and structural transformations of the goethite and hematite. This kind of information is of great interest for professionals working with artwork conservation because this technique is used in the conservation of cultural heritage. Depending on the laser's working conditions, glassy (amorphous) material was detected and its presence was related to areas of fast solidification where the energy delivered was enough to melt the powder particles. Color changes were observed and quantified by means of an RGB color measurement method developed to show the evolution of each color component. |
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REM. Revista Escola de Minas (Online) |
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RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulsesNd:YAG laseriron oxideamorphous materialsgoethitehematiteX-ray diffractionScanning Electron MicroscopyartworksRGB color evolutionLaser irradiation of powdered iron oxides (goethite and hematite) was performed in order to obtain information about their interaction with short duration near-infrared pulses. Results have shown that under some conditions, Nd:YAG laser provides enough energy to induce fast chemical and structural transformations of the goethite and hematite. This kind of information is of great interest for professionals working with artwork conservation because this technique is used in the conservation of cultural heritage. Depending on the laser's working conditions, glassy (amorphous) material was detected and its presence was related to areas of fast solidification where the energy delivered was enough to melt the powder particles. Color changes were observed and quantified by means of an RGB color measurement method developed to show the evolution of each color component.Escola de Minas2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672011000200009Rem: Revista Escola de Minas v.64 n.2 2011reponame:REM. Revista Escola de Minas (Online)instname:Escola de Minasinstacron:ESCOLA DE MINAS10.1590/S0370-44672011000200009info:eu-repo/semantics/openAccessCosta,Adilson Rodrigues daCassino,Flávio Sandro LaysChapoulie,RémyRud,Florenceeng2011-07-27T00:00:00Zoai:scielo:S0370-44672011000200009Revistahttp://www.scielo.br/remhttps://old.scielo.br/oai/scielo-oai.phpeditor@rem.com.br1807-03530370-4467opendoar:2011-07-27T00:00REM. Revista Escola de Minas (Online) - Escola de Minasfalse |
dc.title.none.fl_str_mv |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
title |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
spellingShingle |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses Costa,Adilson Rodrigues da Nd:YAG laser iron oxide amorphous materials goethite hematite X-ray diffraction Scanning Electron Microscopy artworks RGB color evolution |
title_short |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
title_full |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
title_fullStr |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
title_full_unstemmed |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
title_sort |
RGB color evolution: a digital tool for monitoring the visual changes of iron oxide pigments irradiated by infrared laser pulses |
author |
Costa,Adilson Rodrigues da |
author_facet |
Costa,Adilson Rodrigues da Cassino,Flávio Sandro Lays Chapoulie,Rémy Rud,Florence |
author_role |
author |
author2 |
Cassino,Flávio Sandro Lays Chapoulie,Rémy Rud,Florence |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Costa,Adilson Rodrigues da Cassino,Flávio Sandro Lays Chapoulie,Rémy Rud,Florence |
dc.subject.por.fl_str_mv |
Nd:YAG laser iron oxide amorphous materials goethite hematite X-ray diffraction Scanning Electron Microscopy artworks RGB color evolution |
topic |
Nd:YAG laser iron oxide amorphous materials goethite hematite X-ray diffraction Scanning Electron Microscopy artworks RGB color evolution |
description |
Laser irradiation of powdered iron oxides (goethite and hematite) was performed in order to obtain information about their interaction with short duration near-infrared pulses. Results have shown that under some conditions, Nd:YAG laser provides enough energy to induce fast chemical and structural transformations of the goethite and hematite. This kind of information is of great interest for professionals working with artwork conservation because this technique is used in the conservation of cultural heritage. Depending on the laser's working conditions, glassy (amorphous) material was detected and its presence was related to areas of fast solidification where the energy delivered was enough to melt the powder particles. Color changes were observed and quantified by means of an RGB color measurement method developed to show the evolution of each color component. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672011000200009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672011000200009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0370-44672011000200009 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola de Minas |
publisher.none.fl_str_mv |
Escola de Minas |
dc.source.none.fl_str_mv |
Rem: Revista Escola de Minas v.64 n.2 2011 reponame:REM. Revista Escola de Minas (Online) instname:Escola de Minas instacron:ESCOLA DE MINAS |
instname_str |
Escola de Minas |
instacron_str |
ESCOLA DE MINAS |
institution |
ESCOLA DE MINAS |
reponame_str |
REM. Revista Escola de Minas (Online) |
collection |
REM. Revista Escola de Minas (Online) |
repository.name.fl_str_mv |
REM. Revista Escola de Minas (Online) - Escola de Minas |
repository.mail.fl_str_mv |
editor@rem.com.br |
_version_ |
1754122197941616640 |