Author
David Prochazka
Other affiliations: University of Economics, Prague, Brno University of Technology, Mendel University
Bio: David Prochazka is an academic researcher from Central European Institute of Technology. The author has contributed to research in topics: Laser-induced breakdown spectroscopy & Augmented reality. The author has an hindex of 17, co-authored 125 publications receiving 1028 citations. Previous affiliations of David Prochazka include University of Economics, Prague & Brno University of Technology.
Papers published on a yearly basis
Papers
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TL;DR: This work critically assess and elaborate on the approaches to utilize PCA in LIBS data processing, and derives some implications and suggests advice in data preprocessing, visualization, dimensionality reduction, model building, classification, quantification and non-conventional multivariate mapping.
143 citations
TL;DR: The intended aim of this work is to create a database for simple and fast identification of archeological or paleontological materials in situ, which can speed up and simplify the sampling process during archeological excavations that nowadays tend to be quite damaging and timeconsuming.
67 citations
TL;DR: The utilization of Laser-Induced Breakdown Spectroscopy (LIBS) coupled with MVDA is investigated and the impact of LIBS data normalization approaches on MVDA classification accuracy is described.
Abstract: Multivariate data analysis (MVDA) is getting popular across the spectroscopic community. To assess accurate results, the obtained data should be preprocessed prior to utilization of any MVDA algorithm. The process of data normalization or “internal standardization” is widely used across a broad range of applications. In this manuscript we investigate the utilization of Laser-Induced Breakdown Spectroscopy (LIBS) coupled with MVDA. However, many articles regarding the use of MVDA on data from LIBS do not provide any information about the data pretreatment. This work describes the impact of LIBS data normalization approaches on MVDA classification accuracy. Also, the impact of classical data preprocessing (mean centering and scaling) exploiting the prior utilization of MVDA was studied. This issue was investigated exploiting simple soft independent modelling of class analogies algorithm. The findings were generalized for three sample matrices (steel, Al alloys, and sedimentary ores). Furthermore, the selection of an appropriate normalization algorithm is not trivial since the spectrum of each sample matrix is composed of a different number of elements and corresponding elemental lines.
67 citations
TL;DR: In this article, the authors provided high resolution mapping of uranium in sandstone-hosted uranium ores using laser-induced breakdown spectroscopy (LIBS) technique.
53 citations
TL;DR: This paper reviews recent developments in the analysis of algal biomass with the main focus on the Laser-Induced Breakdown Spectroscopy, Raman spectroscopy and partly Laser-Ablation Inductively Coupled Plasma techniques.
Abstract: Algal biomass that is represented mainly by commercially grown algal strains has recently found many potential applications in various fields of interest. Its utilization has been found advantageous in the fields of bioremediation, biofuel production and the food industry. This paper reviews recent developments in the analysis of algal biomass with the main focus on the Laser-Induced Breakdown Spectroscopy, Raman spectroscopy, and partly Laser-Ablation Inductively Coupled Plasma techniques. The advantages of the selected laser-based analytical techniques are revealed and their fields of use are discussed in detail.
53 citations
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TL;DR: Compared to the conventional flame emission spectroscopy, LIBS atomizes only the small portion of the sample by the focused laser pulse, which makes a tiny spark on the sample, and capturing the instant light is a major skill to collect sufficient intensity of the emitting species.
Abstract: ■ CONTENTS General Information: Books, Reviews, and Conferences 640 Fundamentals 641 Interaction of Laser Beam with Matter 641 Factors Affecting Laser Ablation and LaserInduced Plasma Formation 642 Influence of Target on the Laser-Induced Plasmas 642 Influence of Laser Parameters on the LaserInduced Plasmas 643 Laser Wavelength (λ) 643 Laser Pulse Duration (τ) 643 Laser Pulse Energy (E) 645 Influence of Ambient Gas on the Laser-Induced Plasmas 645 LIBS Methods 647 Double Pulse LIBS 647 Femtosecond LIBS 651 Resonant LIBS 652 Ranging Approaches 652 Applications 654 Surface Inspection, Depth Profiling, and LIBS Imaging 654 Cultural Heritage 654 Industrial Analysis 655 Environmental Monitoring 656 Biomedical and Pharmaceutical Analysis 658 Security and Forensics 659 Analysis of Liquids and Submerged Solids 660 Space Exploration and Isotopic Analysis 662 Space Exploration 662 Isotopic Analysis 662 Conclusions and Future Outlook 663 Author Information 664 Corresponding Author 664 Notes 664 Biographies 664 Acknowledgments 664 References 664
847 citations