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Nanomaterials
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Advances in Laser-Based Techniques: From Fundamental Aspects to Applications
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Advances in Laser-Based Techniques: From Fundamental Aspects to Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanofabrication and Nanomanufacturing".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 13931

Special Issue Editors

Prof. Dr. Maria Dinescu

E-Mail Website
Guest Editor
INFLPR—National Institute for Laser, Plasma and Radiation Physics, Magurele, Romania
Interests: laser–matter interactions; functional thin films and heterostructures; coatings of biologically-active materials; matrix-assisted pulsed laser evaporation (MAPLE); pulsed laser deposition (PLD); laser-induced forward transfer (LIFT)
Special Issues, Collections and Topics in MDPI journals
Dr. Andreea Matei

E-Mail Website
Guest Editor
INFLPR—National Institute for Laser, Plasma and Radiation Physics, Măgurele, Romania
Interests: laser processing and applications; nanocomposite materials; clean technologies; surface science and engineering; materials synthesis; materials characterization

Special Issue Information

This Special Issue will gather original works from fundamental research to close-to-the-market processes and products based on lasers; it will cover advances in laser-matter interaction, new approaches in laser material processing and synthesis. Both theoretical and applied results contributions are targeted.  

Three main directions are considered:

  1. Fundamental research on laser matter interaction
  2. Laser material processing and synthesis
  3. Applications & emerging technologies

The latest advances related to phenomenological investigation of light-matter interaction shall be addressed, especially in connection with processing, synthesis of materials, thin films growth and particle production, micro and nano structuring, laser induced forward transfer of functional materials, and laser additive manufacturing.

Hot topics in applied lasers research will refer to biomedical applications, energy and environment, industrial approach, optical technologies, and diagnostics instrumentation to proven capabilities to implement ideas into new or improved equipment or products.

Prof. Dr. Maria Dinescu
Dr. Matei Andreea
Guest Editors

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. Nanomaterials 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 2900 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

  • laser synthesis and processing
  • laser matter interaction
  • lasers for industry and advanced applications
  • thin films and nanostructures
  • heterostructures
  • functional and smart materials

Published Papers (6 papers)

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Research

13 pages, 3817 KiB  
Article
Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles
by Erik Sachse, Marianela Escobar-Castillo, Friedrich Waag, Bilal Gökce, Soma Salamon, Joachim Landers, Heiko Wende and Doru C. Lupascu
Nanomaterials 2022, 12(11), 1872; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12111872 - 30 May 2022
Viewed by 1696
Abstract
Pulsed laser ablation in liquids was utilized to prepare NiFe2O4 (NFO) and CoFe2O4 (CFO) nanoparticles from ceramic targets. The morphology, crystallinity, composition, and particle size distribution of the colloids were investigated. We were able to identify decomposition [...] Read more.
Pulsed laser ablation in liquids was utilized to prepare NiFe2O4 (NFO) and CoFe2O4 (CFO) nanoparticles from ceramic targets. The morphology, crystallinity, composition, and particle size distribution of the colloids were investigated. We were able to identify decomposition products formed during the laser ablation process in water. Attempts to fractionate the nanoparticles using the high-gradient magnetic separation method were performed. The nanoparticles with crystallite sizes in the range of 5–100 nm possess superparamagnetic behavior and approximately 20 Am2/kg magnetization at room temperature. Their ability to absorb light in the visible range makes them potential candidates for catalysis applications in chemical reactions and in biomedicine. Full article
(This article belongs to the Special Issue Advances in Laser-Based Techniques: From Fundamental Aspects to Applications)
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18 pages, 3459 KiB  
Article
In-Situ Imaging of a Light-Induced Modification Process in Organo-Silica Films via Time-Domain Brillouin Scattering
by Sathyan Sandeep, Alexey S. Vishnevskiy, Samuel Raetz, Sergej Naumov, Dmitry S. Seregin, Artem Husiev, Konstantin A. Vorotilov, Vitalyi E. Gusev and Mikhail R. Baklanov
Nanomaterials 2022, 12(9), 1600; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12091600 - 09 May 2022
Cited by 3 | Viewed by 1916
Abstract
We applied time-domain Brillouin scattering (TDBS) for the characterization of porogen-based organosilicate glass (OGS) films deposited by spin-on-glass technology and cured under different conditions. Although the chemical composition and porosity measured by Fourier-transform infrared (FTIR) spectroscopy and ellipsometric porosimetry (EP) did not show [...] Read more.
We applied time-domain Brillouin scattering (TDBS) for the characterization of porogen-based organosilicate glass (OGS) films deposited by spin-on-glass technology and cured under different conditions. Although the chemical composition and porosity measured by Fourier-transform infrared (FTIR) spectroscopy and ellipsometric porosimetry (EP) did not show significant differences between the films, remarkable differences between them were revealed by the temporal evolution of the Brillouin frequency (BF) shift of the probe light in the TDBS. The observed modification of the BF was a signature of the light-induced modification of the films in the process of the TDBS experiments. It correlated to the different amount of carbon residue in the samples, the use of ultraviolet (UV) femtosecond probe laser pulses in our optical setup, and their intensity. In fact, probe radiation with an optical wavelength of 356 nm appeared to be effective in removing carbon residue through single-photon absorption processes, while its two-photon absorption might have led to the breaking of Si-CH3 bonds in the OSG matrix. The quantum chemical calculations confirmed the latter possibility. This discovery demonstrates the possibility of local modifications of OSG films with a nanometric resolution via nonlinear optical processes, which could be important, among other applications, for the creation of active surface sites in the area-selective deposition of atomic layers. Full article
(This article belongs to the Special Issue Advances in Laser-Based Techniques: From Fundamental Aspects to Applications)
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16 pages, 4302 KiB  
Article
Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation
by Cristina Craciun, Florin Andrei, Anca Bonciu, Simona Brajnicov, Tatiana Tozar, Mihaela Filipescu, Alexandra Palla-Papavlu and Maria Dinescu
Nanomaterials 2022, 12(7), 1138; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12071138 - 29 Mar 2022
Cited by 2 | Viewed by 1727
Abstract
This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for the development of electrochemical sensors aimed at the detection of nitrites in water. Commercial carbon-based screen-printed electrodes were modified by MAPLE via the application of [...] Read more.
This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for the development of electrochemical sensors aimed at the detection of nitrites in water. Commercial carbon-based screen-printed electrodes were modified by MAPLE via the application of a newly developed composite coating with different concentrations of carbon nanotubes (CNTs), chitosan, and iron (II) phthalocyanine (C32H16FeN8). The performance of the newly fabricated composite coatings was evaluated both by investigating the morphology and surface chemistry of the coating, and by determining the electro-catalytic oxidation properties of nitrite with bare and modified commercial carbon-based screen-printed electrode. It was found that the combined effect of CNTs with chitosan and C32H16FeN8 significantly improves the electrochemical response towards the oxidation of nitrite. In addition, the MAPLE modified screen-printed electrodes have a limit of detection of 0.12 µM, which make them extremely useful for the detection of nitrite traces. Full article
(This article belongs to the Special Issue Advances in Laser-Based Techniques: From Fundamental Aspects to Applications)
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15 pages, 7579 KiB  
Article
Kaolinite Thin Films Grown by Pulsed Laser Deposition and Matrix Assisted Pulsed Laser Evaporation
by Luminita Nicoleta Dumitrescu, Eusebiu-Rosini Ionita, Ruxandra Birjega, Andrada Lazea-Stoyanova, Maria-Daniela Ionita, George Epurescu, Ana-Maria Banici, Simona Brajnicov, Florin Andrei and Andreea Matei
Nanomaterials 2022, 12(3), 546; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12030546 - 05 Feb 2022
Cited by 1 | Viewed by 2027
Abstract
In this work, thin films of lamellar clays were deposited by laser techniques (matrix assisted pulsed laser evaporation (MAPLE) and pulsed laser deposition (PLD)). The focus of this paper is the optimization of deposition parameters for the production of highly oriented crystalline films. [...] Read more.
In this work, thin films of lamellar clays were deposited by laser techniques (matrix assisted pulsed laser evaporation (MAPLE) and pulsed laser deposition (PLD)). The focus of this paper is the optimization of deposition parameters for the production of highly oriented crystalline films. The films were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and scanning electron microscopy (SEM). Contact angle measurements were employed to identify the wetting properties of the deposited thin films. Hydrophobic to superhydrophilic films can be prepared by using different deposition techniques and deposition parameters. MAPLE led to superhydrophilic films with contact angles in the range 4°–8°, depending on the microstructure and surface roughness at micro and nano scale. The 1064 nm PLD had a high deposition rate and produced a textured film while at λ = 193 nm an extremely thin and amorphous layer was depicted. Oriented kaolinite films were obtained by MAPLE even at 5 wt.% kaolinite in the target. Full article
(This article belongs to the Special Issue Advances in Laser-Based Techniques: From Fundamental Aspects to Applications)
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19 pages, 6709 KiB  
Article
Modification of Aerosol Gold Nanoparticles by Nanosecond Pulsed-Periodic Laser Radiation
by Kirill Khabarov, Messan Nouraldeen, Sergei Tikhonov, Anna Lizunova, Alexey Efimov and Victor Ivanov
Nanomaterials 2021, 11(10), 2701; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11102701 - 13 Oct 2021
Cited by 7 | Viewed by 1605
Abstract
This study investigates the processes of interaction of nanosecond pulsed-periodic laser radiation with the flow of aerosol agglomerates of gold nanoparticles synthesized in a spark discharge. Nanoparticles in a gas flow are spatially separated nano-objects whose interaction with each other and with the [...] Read more.
This study investigates the processes of interaction of nanosecond pulsed-periodic laser radiation with the flow of aerosol agglomerates of gold nanoparticles synthesized in a spark discharge. Nanoparticles in a gas flow are spatially separated nano-objects whose interaction with each other and with the walls of an experimental cell was insignificant. Therefore, the energy absorbed by nanoparticles was used only for their own heating with further shape and size modification and on heat transfer to the surrounding gas. In the research, we used laser radiation with wavelengths of 527 and 1053 nm at pulse energies up to 900 µJ and pulse repetition rates up to 500 Hz. The dynamics of changes in the nanoparticles size during their sintering process depending on the laser pulses energy is characterized by an S-shaped shrinkage curve. Complete sintering of the initial agglomerates with their transformation into spherical nanoparticles is achieved by a series of impacting laser pulses. The result of nanoparticles’ laser modification is largely determined by the pulse energy and the efficiency of the nanoparticles’ radiation absorption. Full article
(This article belongs to the Special Issue Advances in Laser-Based Techniques: From Fundamental Aspects to Applications)
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16 pages, 4560 KiB  
Article
Laser Thermochemical High-Contrast Recording on Thin Metal Films
by Elena A. Shakhno, Quang D. Nguyen, Dmitry A. Sinev, Elizaveta V. Matvienko, Roman A. Zakoldaev and Vadim P. Veiko
Nanomaterials 2021, 11(1), 67; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11010067 - 30 Dec 2020
Cited by 4 | Viewed by 4158
Abstract
Laser-induced thermochemical recording of nano- and microsized structures on thin films has attracted intense interest over the last few decades due to essential applications in the photonics industry. Nevertheless, the relationship between the laser parameters and the properties of the formed oxide structures, [...] Read more.
Laser-induced thermochemical recording of nano- and microsized structures on thin films has attracted intense interest over the last few decades due to essential applications in the photonics industry. Nevertheless, the relationship between the laser parameters and the properties of the formed oxide structures, both geometrical and optical, is still implicit. In this work, direct laser interference patterning of the titanium (Ti) film in the oxidative regime was applied to form submicron periodical structures. Depending on the number of laser pulses, the regime of high contrast structures recording was observed with the maximum achievable thickness of the oxide layer. The investigation revealed high transmittance of the formed oxide layers, i.e., the contrast of recorded structures reached up to 90% in the visible range. To analyze the experimental results obtained, a theoretical model was developed based on calculations of the oxide formation dynamics. The model operates on Wagner oxidation law and the corresponding optical properties of the oxide–metal–glass substrate system changing nonlinearly after each pulse. A good agreement of the experimental results with the modeling estimations allowed us to extend the model application to other metals, specifically to those with optically transparent oxides, such as zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), and tantalum (Ta). The performed analysis highlighted the importance of choosing the correct laser parameters due to the complexity and nonlinearity of optical, thermal, and chemical processes in the metal film during its laser-induced oxidation in the air. The developed model allowed selecting the suitable temporal–energetic regimes and predicting the optical characteristics of the structures formed with an accuracy of 10%. The results are promising in terms of their implementation in the photonics industry for the production of optical converters. Full article
(This article belongs to the Special Issue Advances in Laser-Based Techniques: From Fundamental Aspects to Applications)
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