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QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire
This paper reports on a micro-certification procedure using femtosecond laser irradiation to microscopically mark a single-crystalline gemological and natural diamond, synthetic ruby and synthetic sapphire, inscribing a QR Code on them. The QR-code was composed of a set of 25 × 25 micropoints, and t...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6586618/ https://www.ncbi.nlm.nih.gov/pubmed/31222126 http://dx.doi.org/10.1038/s41598-019-45405-7 |
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author | Batista, Andre Jaques Vianna, Pilar Gregory Ribeiro, Henrique Bucker Matos, Christiano Jose Santiago de Gomes, Anderson Stevens Leonidas |
author_facet | Batista, Andre Jaques Vianna, Pilar Gregory Ribeiro, Henrique Bucker Matos, Christiano Jose Santiago de Gomes, Anderson Stevens Leonidas |
author_sort | Batista, Andre Jaques |
collection | PubMed |
description | This paper reports on a micro-certification procedure using femtosecond laser irradiation to microscopically mark a single-crystalline gemological and natural diamond, synthetic ruby and synthetic sapphire, inscribing a QR Code on them. The QR-code was composed of a set of 25 × 25 micropoints, and the irradiation energy was optimized at 1kHz repetition rate. The code was made at a 20 µm relative depth into the gemstone surfaces by controlling the incident laser energy, that was set to 3 μJ for all the samples. Characterization by optical and electron microscopy, as well as micro-Raman hyperspectral imaging showed that the microdots have a diameter of about 14 µm perpendicular to the irradiation direction, being laterally spaced by 14 µm-18 µm applied for each sample. This work corroborates the feasibility of using ultrafast laser inscription technology to fabricate microdots with great quality on gemstone surfaces, which offers a great potential for the jewelry industry to safely micro-encrypt gemological certifications. The compositional and morphological characterization of the modified surface was carried by micro-Raman spectroscopy and scanning electron microscopy. |
format | Online Article Text |
id | pubmed-6586618 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-65866182019-06-26 QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire Batista, Andre Jaques Vianna, Pilar Gregory Ribeiro, Henrique Bucker Matos, Christiano Jose Santiago de Gomes, Anderson Stevens Leonidas Sci Rep Article This paper reports on a micro-certification procedure using femtosecond laser irradiation to microscopically mark a single-crystalline gemological and natural diamond, synthetic ruby and synthetic sapphire, inscribing a QR Code on them. The QR-code was composed of a set of 25 × 25 micropoints, and the irradiation energy was optimized at 1kHz repetition rate. The code was made at a 20 µm relative depth into the gemstone surfaces by controlling the incident laser energy, that was set to 3 μJ for all the samples. Characterization by optical and electron microscopy, as well as micro-Raman hyperspectral imaging showed that the microdots have a diameter of about 14 µm perpendicular to the irradiation direction, being laterally spaced by 14 µm-18 µm applied for each sample. This work corroborates the feasibility of using ultrafast laser inscription technology to fabricate microdots with great quality on gemstone surfaces, which offers a great potential for the jewelry industry to safely micro-encrypt gemological certifications. The compositional and morphological characterization of the modified surface was carried by micro-Raman spectroscopy and scanning electron microscopy. Nature Publishing Group UK 2019-06-20 /pmc/articles/PMC6586618/ /pubmed/31222126 http://dx.doi.org/10.1038/s41598-019-45405-7 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Batista, Andre Jaques Vianna, Pilar Gregory Ribeiro, Henrique Bucker Matos, Christiano Jose Santiago de Gomes, Anderson Stevens Leonidas QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire |
title | QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire |
title_full | QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire |
title_fullStr | QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire |
title_full_unstemmed | QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire |
title_short | QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire |
title_sort | qr code micro-certified gemstones: femtosecond writing and raman characterization in diamond, ruby and sapphire |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6586618/ https://www.ncbi.nlm.nih.gov/pubmed/31222126 http://dx.doi.org/10.1038/s41598-019-45405-7 |
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