Cargando…

High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object

Photoluminescence spectroscopy is a key method to monitor defects in semiconductors from nanophotonics to solar cell systems. Paradoxically, its great sensitivity to small variations of local environment becomes a handicap for heterogeneous systems, such as are encountered in environmental, medical,...

Descripción completa

Detalles Bibliográficos
Autores principales: Thoury, M., Mille, B., Séverin-Fabiani, T., Robbiola, L., Réfrégiers, M., Jarrige, J-F, Bertrand, L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116070/
https://www.ncbi.nlm.nih.gov/pubmed/27843139
http://dx.doi.org/10.1038/ncomms13356
_version_ 1782468606049648640
author Thoury, M.
Mille, B.
Séverin-Fabiani, T.
Robbiola, L.
Réfrégiers, M.
Jarrige, J-F
Bertrand, L.
author_facet Thoury, M.
Mille, B.
Séverin-Fabiani, T.
Robbiola, L.
Réfrégiers, M.
Jarrige, J-F
Bertrand, L.
author_sort Thoury, M.
collection PubMed
description Photoluminescence spectroscopy is a key method to monitor defects in semiconductors from nanophotonics to solar cell systems. Paradoxically, its great sensitivity to small variations of local environment becomes a handicap for heterogeneous systems, such as are encountered in environmental, medical, ancient materials sciences and engineering. Here we demonstrate that a novel full-field photoluminescence imaging approach allows accessing the spatial distribution of crystal defect fluctuations at the crystallite level across centimetre-wide fields of view. This capacity is illustrated in archaeology and material sciences. The coexistence of two hitherto indistinguishable non-stoichiometric cuprous oxide phases is revealed in a 6,000-year-old amulet from Mehrgarh (Baluchistan, Pakistan), identified as the oldest known artefact made by lost-wax casting and providing a better understanding of this fundamental invention. Low-concentration crystal defect fluctuations are readily mapped within ZnO nanowires. High spatial dynamics-photoluminescence imaging holds great promise for the characterization of bulk heterogeneous systems across multiple disciplines.
format Online
Article
Text
id pubmed-5116070
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-51160702017-01-13 High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object Thoury, M. Mille, B. Séverin-Fabiani, T. Robbiola, L. Réfrégiers, M. Jarrige, J-F Bertrand, L. Nat Commun Article Photoluminescence spectroscopy is a key method to monitor defects in semiconductors from nanophotonics to solar cell systems. Paradoxically, its great sensitivity to small variations of local environment becomes a handicap for heterogeneous systems, such as are encountered in environmental, medical, ancient materials sciences and engineering. Here we demonstrate that a novel full-field photoluminescence imaging approach allows accessing the spatial distribution of crystal defect fluctuations at the crystallite level across centimetre-wide fields of view. This capacity is illustrated in archaeology and material sciences. The coexistence of two hitherto indistinguishable non-stoichiometric cuprous oxide phases is revealed in a 6,000-year-old amulet from Mehrgarh (Baluchistan, Pakistan), identified as the oldest known artefact made by lost-wax casting and providing a better understanding of this fundamental invention. Low-concentration crystal defect fluctuations are readily mapped within ZnO nanowires. High spatial dynamics-photoluminescence imaging holds great promise for the characterization of bulk heterogeneous systems across multiple disciplines. Nature Publishing Group 2016-11-15 /pmc/articles/PMC5116070/ /pubmed/27843139 http://dx.doi.org/10.1038/ncomms13356 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Thoury, M.
Mille, B.
Séverin-Fabiani, T.
Robbiola, L.
Réfrégiers, M.
Jarrige, J-F
Bertrand, L.
High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
title High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
title_full High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
title_fullStr High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
title_full_unstemmed High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
title_short High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
title_sort high spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116070/
https://www.ncbi.nlm.nih.gov/pubmed/27843139
http://dx.doi.org/10.1038/ncomms13356
work_keys_str_mv AT thourym highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject
AT milleb highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject
AT severinfabianit highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject
AT robbiolal highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject
AT refregiersm highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject
AT jarrigejf highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject
AT bertrandl highspatialdynamicsphotoluminescenceimagingrevealsthemetallurgyoftheearliestlostwaxcastobject