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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,...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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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 |
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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 |
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