Laser focusing geometry effects on laser-induced plasma and laser-induced breakdown spectroscopy in bulk water

2019 ◽  
Vol 34 (1) ◽  
pp. 118-126 ◽  
Author(s):  
Ye Tian ◽  
Lintao Wang ◽  
Boyang Xue ◽  
Qian Chen ◽  
Ying Li
Keyword(s):  
Bulk Water ◽  
Fast Imaging ◽  
Laser Induced Breakdown Spectroscopy ◽  
Spectroscopic Techniques ◽  
Laser Induced Plasma ◽  
Breakdown Spectroscopy ◽  
Laser Focusing ◽  
Laser Induced Breakdown ◽  
Geometry Effects

The influences of laser focusing geometry on laser-induced plasma and laser-induced breakdown spectroscopy (LIBS) in bulk water are investigated by using fast imaging and spectroscopic techniques.

scholarly journals Classification of Greek Olive Oils from Different Regions by Machine Learning-Aided Laser-Induced Breakdown Spectroscopy and Absorption Spectroscopy

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1241
Author(s):  
Nikolaos Gyftokostas ◽  
Eleni Nanou ◽  
Dimitrios Stefas ◽  
Vasileios Kokkinos ◽  
Christos Bouras ◽  
...  
Keyword(s):  
Machine Learning ◽  
Olive Oil ◽  
Absorption Spectra ◽  
Absorption Spectroscopy ◽  
Laser Induced Breakdown Spectroscopy ◽  
Spectroscopic Techniques ◽  
Breakdown Spectroscopy ◽  
Olive Oils ◽  
Laser Induced Breakdown

In the present work, the emission and the absorption spectra of numerous Greek olive oil samples and mixtures of them, obtained by two spectroscopic techniques, namely Laser-Induced Breakdown Spectroscopy (LIBS) and Absorption Spectroscopy, and aided by machine learning algorithms, were employed for the discrimination/classification of olive oils regarding their geographical origin. Both emission and absorption spectra were initially preprocessed by means of Principal Component Analysis (PCA) and were subsequently used for the construction of predictive models, employing Linear Discriminant Analysis (LDA) and Support Vector Machines (SVM). All data analysis methodologies were validated by both “k-fold” cross-validation and external validation methods. In all cases, very high classification accuracies were found, up to 100%. The present results demonstrate the advantages of machine learning implementation for improving the capabilities of these spectroscopic techniques as tools for efficient olive oil quality monitoring and control.

Optimization of distances between the target surface and focal point on spatially confined laser-induced breakdown spectroscopy with a cylindrical cavity

2017 ◽  
Vol 32 (2) ◽  
pp. 367-372 ◽  
Author(s):  
Jin Guo ◽  
Junfeng Shao ◽  
Tingfeng Wang ◽  
Changbin Zheng ◽  
Anmin Chen ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Focal Point ◽  
Optical Emission ◽  
Target Surface ◽  
Laser Induced Breakdown Spectroscopy ◽  
Spatial Confinement ◽  
Laser Induced Plasma ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

The spatial confinement effect in laser-induced plasma with different distances between the target surface and focal point is investigated by optical emission spectroscopy.

Effects of laser focusing and fluence on the analysis of pellets of plant materials by laser-induced breakdown spectroscopy

2012 ◽  
Vol 74-75 ◽  
pp. 162-168 ◽  
Author(s):  
Gabriel Gustinelli Arantes de Carvalho ◽  
Dario Santos ◽  
Lidiane Cristina Nunes ◽  
Marcos da Silva Gomes ◽  
Flavio de Oliveira Leme ◽  
...  
Keyword(s):  
Laser Induced Breakdown Spectroscopy ◽  
Plant Materials ◽  
Breakdown Spectroscopy ◽  
Laser Focusing ◽  
Laser Induced Breakdown

Determination of antimony concentrations in widely used plastic objects by laser induced breakdown spectroscopy (LIBS)

2018 ◽  
Vol 33 (11) ◽  
pp. 1917-1924 ◽  
Author(s):  
Violeta Lazic ◽  
Montserrat Filella ◽  
Andrew Turner
Keyword(s):  
Laser Induced Breakdown Spectroscopy ◽  
Plasma Spectroscopy ◽  
Laser Induced Plasma ◽  
Breakdown Spectroscopy ◽  
Plastic Materials ◽  
Laser Induced Breakdown

In this study, the feasibility of measuring the Sb content in different plastic materials by laser induced plasma spectroscopy (LIBS) is explored.

Non-gated laser-induced breakdown spectroscopy in bulk water by position-selective detection

2015 ◽  
Vol 107 (11) ◽  
pp. 111107 ◽  
Author(s):  
Ye Tian ◽  
Boyang Xue ◽  
Jiaojian Song ◽  
Yuan Lu ◽  
Ronger Zheng
Keyword(s):  
Bulk Water ◽  
Laser Induced Breakdown Spectroscopy ◽  
Selective Detection ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown
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