Characterization of Functional Coatings on Cork Stoppers with Laser-Induced Breakdown Spectroscopy Imaging

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Ferreira, MFS (Author) Other; Guimaraes, D (Author) Other; Oliveira, R (Author) Other; Lopes, T (Author) Other; Capela, D (Author) Other; Marrafa, J (Author) Other; Meneses, P (Author) Other; Oliveira, A (Author) Other; Baptista, C (Author) Other; Gomes, T (Author) Other; Moutinho, S (Author) Other; Coelho, J (Author) Other; da Silva, RN (Author) Other; Silva, NA (Author) Other; Jorge, PAS (Author) FCUP

Journal

Title: Sensors

Vol. 23

Final page: 9133

ISSN: 1424-3210

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00Z-ANC

DOI: 10.3390/s23229133

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12