{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T08:30:38Z","timestamp":1771921838783,"version":"3.50.1"},"reference-count":28,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2023,11,12]],"date-time":"2023-11-12T00:00:00Z","timestamp":1699747200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"FEDER funds, Portugal","award":["NORTE-01-0247-FEDER-047040"],"award-info":[{"award-number":["NORTE-01-0247-FEDER-047040"]}]},{"name":"FEDER funds, Portugal","award":["POCI-01-0246-FEDER-181298"],"award-info":[{"award-number":["POCI-01-0246-FEDER-181298"]}]},{"name":"FEDER funds, Portugal","award":["AAC n\u00ba 03\/C05-i02\/2022"],"award-info":[{"award-number":["AAC n\u00ba 03\/C05-i02\/2022"]}]},{"name":"FEDER funds, Portugal","award":["NORTE-06-3559-FSE-0000112"],"award-info":[{"award-number":["NORTE-06-3559-FSE-0000112"]}]},{"name":"SIAC2021: Scientific and technological interface, Cork industry","award":["NORTE-01-0247-FEDER-047040"],"award-info":[{"award-number":["NORTE-01-0247-FEDER-047040"]}]},{"name":"SIAC2021: Scientific and technological interface, Cork industry","award":["POCI-01-0246-FEDER-181298"],"award-info":[{"award-number":["POCI-01-0246-FEDER-181298"]}]},{"name":"SIAC2021: Scientific and technological interface, Cork industry","award":["AAC n\u00ba 03\/C05-i02\/2022"],"award-info":[{"award-number":["AAC n\u00ba 03\/C05-i02\/2022"]}]},{"name":"SIAC2021: Scientific and technological interface, Cork industry","award":["NORTE-06-3559-FSE-0000112"],"award-info":[{"award-number":["NORTE-06-3559-FSE-0000112"]}]},{"name":"CTCOR\u2014Innovation and Technological Centre\u2014CTI basal funding","award":["NORTE-01-0247-FEDER-047040"],"award-info":[{"award-number":["NORTE-01-0247-FEDER-047040"]}]},{"name":"CTCOR\u2014Innovation and Technological Centre\u2014CTI basal funding","award":["POCI-01-0246-FEDER-181298"],"award-info":[{"award-number":["POCI-01-0246-FEDER-181298"]}]},{"name":"CTCOR\u2014Innovation and Technological Centre\u2014CTI basal funding","award":["AAC n\u00ba 03\/C05-i02\/2022"],"award-info":[{"award-number":["AAC n\u00ba 03\/C05-i02\/2022"]}]},{"name":"CTCOR\u2014Innovation and Technological Centre\u2014CTI basal funding","award":["NORTE-06-3559-FSE-0000112"],"award-info":[{"award-number":["NORTE-06-3559-FSE-0000112"]}]},{"name":"PORNorte","award":["NORTE-01-0247-FEDER-047040"],"award-info":[{"award-number":["NORTE-01-0247-FEDER-047040"]}]},{"name":"PORNorte","award":["POCI-01-0246-FEDER-181298"],"award-info":[{"award-number":["POCI-01-0246-FEDER-181298"]}]},{"name":"PORNorte","award":["AAC n\u00ba 03\/C05-i02\/2022"],"award-info":[{"award-number":["AAC n\u00ba 03\/C05-i02\/2022"]}]},{"name":"PORNorte","award":["NORTE-06-3559-FSE-0000112"],"award-info":[{"award-number":["NORTE-06-3559-FSE-0000112"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Evaluating the efficiency of surface treatments is a problem of paramount importance for the cork stopper industry. Generically, these treatments create coatings that aim to enhance the impermeability and lubrification of cork stoppers. Yet, current methods of surface analysis are typically time-consuming, destructive, have poor representativity or rely on indirect approaches. In this work, the use of a laser-induced breakdown spectroscopy (LIBS) imaging solution is explored for evaluating the presence of coating along the cylindrical surface and in depth. To test it, several cork stoppers with different shaped areas of untreated surface were analyzed by LIBS, making a rectangular grid of spots with multiple shots per spot, to try to identify the correspondent shape. Results show that this technique can detect the untreated area along with other features, such as leakage and holes, allowing for a high success rate of identification and for its performance at different depths, paving the way for future industry-grade quality control solutions with more complex surface analysis.<\/jats:p>","DOI":"10.3390\/s23229133","type":"journal-article","created":{"date-parts":[[2023,11,13]],"date-time":"2023-11-13T02:46:47Z","timestamp":1699843607000},"page":"9133","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Characterization of Functional Coatings on Cork Stoppers with Laser-Induced Breakdown Spectroscopy Imaging"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7764-5128","authenticated-orcid":false,"given":"Miguel F. S.","family":"Ferreira","sequence":"first","affiliation":[{"name":"Center for Applied Photonics, INESC TEC, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"},{"name":"Departamento de F\u00edsica e Astronomia, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7451-1979","authenticated-orcid":false,"given":"Diana","family":"Guimar\u00e3es","sequence":"additional","affiliation":[{"name":"Center for Applied Photonics, INESC TEC, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"given":"Rafaela","family":"Oliveira","sequence":"additional","affiliation":[{"name":"EGITRON, Rua Central da Vergada, 1280, 4535-166 Mozelos, Portugal"}]},{"given":"Tom\u00e1s","family":"Lopes","sequence":"additional","affiliation":[{"name":"Center for Applied Photonics, INESC TEC, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"},{"name":"Departamento de F\u00edsica e Astronomia, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8335-6456","authenticated-orcid":false,"given":"Diana","family":"Capela","sequence":"additional","affiliation":[{"name":"Center for Applied Photonics, INESC TEC, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"given":"Jos\u00e9","family":"Marrafa","sequence":"additional","affiliation":[{"name":"EGITRON, Rua Central da Vergada, 1280, 4535-166 Mozelos, Portugal"}]},{"given":"Pedro","family":"Meneses","sequence":"additional","affiliation":[{"name":"EGITRON, Rua Central da Vergada, 1280, 4535-166 Mozelos, Portugal"}]},{"given":"Armindo","family":"Oliveira","sequence":"additional","affiliation":[{"name":"EGITRON, Rua Central da Vergada, 1280, 4535-166 Mozelos, Portugal"}]},{"given":"Carlos","family":"Baptista","sequence":"additional","affiliation":[{"name":"Azevedos Ind\u00fastria, Rua de Santo Ant\u00f3nio 1, Apartado 3, 4536-909 Lourosa, Portugal"}]},{"given":"Tiago","family":"Gomes","sequence":"additional","affiliation":[{"name":"Azevedos Ind\u00fastria, Rua de Santo Ant\u00f3nio 1, Apartado 3, 4536-909 Lourosa, Portugal"}]},{"given":"S\u00e9rgio","family":"Moutinho","sequence":"additional","affiliation":[{"name":"Cork Technological Centre, Rua Am\u00e9lia Camossa, 4535-368 Santa Maria de Lamas, Portugal"}]},{"given":"Jos\u00e9","family":"Coelho","sequence":"additional","affiliation":[{"name":"Cork Technological Centre, Rua Am\u00e9lia Camossa, 4535-368 Santa Maria de Lamas, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8724-8794","authenticated-orcid":false,"given":"Raquel","family":"Nunes da Silva","sequence":"additional","affiliation":[{"name":"Cork Technological Centre, Rua Am\u00e9lia Camossa, 4535-368 Santa Maria de Lamas, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8467-4357","authenticated-orcid":false,"given":"Nuno A.","family":"Silva","sequence":"additional","affiliation":[{"name":"Center for Applied Photonics, INESC TEC, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"},{"name":"Departamento de F\u00edsica e Astronomia, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1484-2068","authenticated-orcid":false,"given":"Pedro A. S.","family":"Jorge","sequence":"additional","affiliation":[{"name":"Center for Applied Photonics, INESC TEC, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"},{"name":"Departamento de F\u00edsica e Astronomia, Faculdade de Ci\u00eancias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1179\/174328005X41168","article-title":"Cork: Properties, capabilities and applications","volume":"50","author":"Silva","year":"2005","journal-title":"Int. Mater. Rev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"4932","DOI":"10.1021\/jf0529823","article-title":"Characterization of surface treatments of cork stoppers by FTIR-ATR","volume":"54","year":"2006","journal-title":"J. Agric. 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