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Laser-Induced Breakdown Spectroscopy: Developments and Applications from the Elemental to...
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Laser-Induced Breakdown Spectroscopy: Developments and Applications from the Elemental to Molecular Analysis Domains

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Analytical Chemistry".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 5932

Special Issue Editor

Prof. Dr. Mohamed Abdel Harith

E-Mail Website
Guest Editor
National Institute of Laser Enhanced Science (NILES), Cairo University, Giza 12613, Egypt
Interests: laser spectroscopy; laser-induced breakdown spectroscopy; laser ablation; laser-induced fluorescence; biomedical applications of lasers; archaeological applications of lasers; geochemical applications of lasers; chemometrics

Special Issue Information

Dear Colleagues,

The present Special Issue focuses on state-of-the-art fundamental and essential developments and applications of LIBS both as an elemental analysis technique and a molecular one. Submission of original research and critical, comprehensive reviews dealing with the following themes (and also relevant others) is also welcome:

  • Linking the potential of the elemental analysis via LIBS to the molecular ones;
  • Molecule’s species detection and its formation kinematics and spectroscopy via LIBS;
  • Modeling and/or simulation of molecules formation and dissociation in the laser-induced plasma under different experimental conditions;
  • Hyphenated approaches (LIBS-Raman, LIBS-LIF, LA-LIBS, etc.);
  • Biomedical applications of elemental and molecular LIBS;
  • LIBS mapping in biological tissues;
  • Isotope analysis via LIBS under different experimental circumstances;
  • Utilizing chemometric methods for the statistical treatment of LIBS data.

There will be a limited opportunity to submit review papers (2 to 3 in this issue, depending on the total number of accepted manuscripts). However, review articles should attract a broad section of the journal’s readership. Therefore, it is advisable to contact the guest editor to explore the possibility of review papers submission.

Prof. Dr. Mohamed Abdel Harith
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • LIBS
  • molecular LIBS
  • development and applications
  • molecules formation and dissociation in LIBS
  • hyphenated approaches
  • modeling and simulation
  • chemometrics

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Published Papers (2 papers)

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Research

8 pages, 6863 KiB  
Communication
Electrolyte Analysis in Blood Serum by Laser-Induced Breakdown Spectroscopy Using a Portable Laser
by Zhongqi Feng, Shuaishuai Li, Tianyu Gu, Xiaofei Zhou, Zixu Zhang, Zhifu Yang, Jiajia Hou, Jiangfeng Zhu and Dacheng Zhang
Molecules 2022, 27(19), 6438; https://doi.org/10.3390/molecules27196438 - 29 Sep 2022
Cited by 9 | Viewed by 2516 | Correction
Abstract
The fast and reliable analysis of electrolytes such as K, Na, Ca in human blood serum has become an indispensable tool for diagnosing and preventing diseases. Laser-induced breakdown spectroscopy (LIBS) has been demonstrated as a powerful analytical technique on elements. To apply LIBS [...] Read more.
The fast and reliable analysis of electrolytes such as K, Na, Ca in human blood serum has become an indispensable tool for diagnosing and preventing diseases. Laser-induced breakdown spectroscopy (LIBS) has been demonstrated as a powerful analytical technique on elements. To apply LIBS to the quantitative analysis of electrolyte elements in real time, a self-developed portable laser was used to measure blood serum samples supported by glass slides and filter paper in this work. The partial least squares regression (PLSR) method was employed for predicting the concentrations of K, Na, Ca from serum LIBS spectra. Great prediction accuracies with excellent linearity were obtained for the serum samples, both on glass slides and filter paper. For blood serum on glass slides, the prediction accuracies for K, Na, Ca were 1.45%, 0.61% and 3.80%. Moreover, for blood serum on filter paper, the corresponding prediction accuracies were 7.47%, 1.56% and 0.52%. The results show that LIBS using a portable laser with the assistance of PLSR can be used for accurate quantitative analysis of elements in blood serum in real time. This work reveals that the handheld LIBS instruments will be an excellent tool for real-time clinical practice. Full article
(This article belongs to the Special Issue Laser-Induced Breakdown Spectroscopy: Developments and Applications from the Elemental to Molecular Analysis Domains)
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13 pages, 3833 KiB  
Article
Quantification of Aluminum Gallium Arsenide (AlGaAs) Wafer Plasma Using Calibration-Free Laser-Induced Breakdown Spectroscopy (CF-LIBS)
by Tahani A. Alrebdi, Amir Fayyaz, Haroon Asghar, Asif Zaman, Mamoon Asghar, Fatemah H. Alkallas, Atif Hussain, Javed Iqbal and Wilayat Khan
Molecules 2022, 27(12), 3754; https://doi.org/10.3390/molecules27123754 - 10 Jun 2022
Cited by 10 | Viewed by 2590
Abstract
In this work, we report the results of the compositional analysis of an aluminum gallium arsenide (AlGaAs) sample using the calibration-free laser-induced breakdown spectroscopy (CF-LIBS) technique. The AlGaAs sample was doped with three various concentrations of gallium (Ga), arsenic (As), and aluminum (Al), [...] Read more.
In this work, we report the results of the compositional analysis of an aluminum gallium arsenide (AlGaAs) sample using the calibration-free laser-induced breakdown spectroscopy (CF-LIBS) technique. The AlGaAs sample was doped with three various concentrations of gallium (Ga), arsenic (As), and aluminum (Al), as reported by the manufacturer, and the CF-LIBS technique was employed to identify the doping concentration. A pulsed Q-switched Nd: YAG laser capable of delivering 200 and 400 mJ energy at 532 and 1064 nm, respectively, was focused on the target sample for ablation, and the resulting emission spectra were captured using a LIBS 2000+ spectrometer covering the spectral range from 200 to 720 nm. The emission spectra of the AlGaAs sample yielded spectral lines of Ga, As, and Al. These lines were further used to calculate the plasma parameters, including electron temperature and electron number density. The Boltzmann plot method was used to calculate the electron temperature, and the average electron temperature was found to be 5744 ± 500 K. Furthermore, the electron number density was calculated from the Stark-broadened line profile method, and the average number density was calculated to be 6.5 × 1017 cm−3. It is further observed that the plasma parameters including electron temperature and electron number density have an increasing trend with laser irradiance and a decreasing trend along the plume length up to 2 mm. Finally, the elemental concentrations in terms of weight percentage using the CF-LIBS method were calculated to be Ga: 94%, Al: 4.77% and As: 1.23% for sample-1; Ga: 95.63%, Al: 1.15% and As: 3.22% for sample-2; and Ga: 97.32%, Al: 0.69% and As: 1.99% for sample-3. The certified concentrations were Ga: 95%, Al: 3% and As: 2% for sample-1; Ga: 96.05%, Al: 1% and As: 2.95% for sample-2; and Ga: 97.32%, Al: 0.69% and As: 1.99% for sample-3. The concentrations measured by CF-LIBS showed good agreement with the certified values reported by the manufacturer. These findings suggest that the CF-LIBS technique opens up an avenue for the industrial application of LIBS, where quantitative/qualitative analysis of the material is highly desirable. Full article
(This article belongs to the Special Issue Laser-Induced Breakdown Spectroscopy: Developments and Applications from the Elemental to Molecular Analysis Domains)
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