Details
Name
Miguel Soares FerreiraCluster
Networked Intelligent SystemsRole
Research AssistantSince
01st March 2015
Nationality
PortugalCentre
Applied PhotonicsContacts
+351220402301
miguel.s.ferreira@inesctec.pt
2022
Authors
Ferreira, MFS; Silva, NA; Guimarães, D; Martins, RC; Jorge, PAS;
Publication
U.Porto Journal of Engineering
Abstract
2022
Authors
Silva N.A.; Capela D.; Ferreira M.; Gonçalves F.; Lima A.; Guimarães D.; Jorge P.A.S.;
Publication
Results in Optics
Abstract
2022
Authors
Ferreira, MFS; Capela, D; Silva, NA; Goncalves, F; Lima, A; Guimaraes, D; Jorge, PAS;
Publication
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
Abstract
Laser-induced breakdown spectroscopy allows fast chemical analysis of light elements without significant sample preparation, turning it into a promising technique for on-site mining operations. Still, the performance for quantification purposes remains its major caveat, obstructing a broader application of the technique. In this work, we present an extensive comparison of the performances of distinct algorithms for quantification of Lithium in a mining prospection stage, using spectra acquired with both a commercial handheld device and a laboratory prototype. Covering both linear and non-linear methodologies, the results show that, when covering a wide range of concentrations typical on a mining operation, non-linear methodologies manage to achieve errors compatible with a semi-quantitative performance, offering performances better than those obtained with linear methods, which are more affected by saturation and matrix effects. The findings enclosed offer support for future applications in the field and may possibly be generalized for other elements of interest in similar mining environments.
2022
Authors
Lopes, T; Cavaco, R; Rodrigues, P; Ferreira, J; Capela, D; Ferreira, MFS; Jorge, PAS; Silva, NA;
Publication
Journal of Physics: Conference Series
Abstract
While laser-induced breakdown spectroscopy is often used as a standalone technique, recent years saw an increasing interest in their combination with additional techniques towards multimodal sensing solutions capable of enhancing the capabilities of this technological solution. In this work, we try to identify possible synergies that arise from merging the analysis of laser-induced breakdown spectroscopy with that from a hyperspectral scanning of the sample, comparing it with the performance of standalone solutions. Having investigated the multimodal approach for a case study involving the identification of lithium minerals, our preliminary results demonstrate that while both solutions can provide reasonable results for qualitative mineral identification, they feature advantages and disadvantages that shall be taken into further consideration. Nevertheless, when working in collaboration, the results enclosed suggest that an integrated tandem solution can be an interesting tool for material analysis for research and industrial applications, combining the best of both instruments. © Published under licence by IOP Publishing Ltd.
2022
Authors
Rodrigues, P; Lopes, T; Cavaco, R; Capela, D; Ferreira, MFS; Jorge, PAS; Silva, NA;
Publication
Journal of Physics: Conference Series
Abstract
The possibility to map the element distribution on a sample surface is one of the interesting applications of laser-induced breakdown spectroscopy that has been extensively explored in recent years. In this manuscript, we explore the combination of photogrammetry and LIBS techniques for the creation of a three-dimensional model of the map of the elements on the surface of the sample. Using a dedicated photogrammetry solution and software, we reconstruct the three-dimensional model of the mineral sample whose mesh is later exploited for the interactive interpretation of the results. Then, making use of Paraview software, which integrates production algorithms and computing performance in a unified solution for scientific purposes, we establish a process pipeline that allows the creation of an interactive three-dimensional model with the spatial distribution of the target elements on top of the sample surface. Our results demonstrate that combining these two techniques can give us a valuable resource for better qualitative analysis and insight, providing an innovative three-dimensional modeling solution that may open the door to a new range of possibilities, from quality control technology involving alloys and mechanical parts to interactive teaching environments for geo and biosciences, just to name a few examples. © Published under licence by IOP Publishing Ltd.
The access to the final selection minute is only available to applicants.
Please check the confirmation e-mail of your application to obtain the access code.