Preparation and Characterization of Coatings with Special Properties

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 4085

Special Issue Editor


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Guest Editor
Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
Interests: material characterizations; thin film deposition; materials science; XPS; photovoltaics; solar cells; nanostructures; plasmonics; solar energy materials; metal sulphites; metal oxides

Special Issue Information

Dear Colleagues,

The coatings play important roles in the development of industry and society. The performance of critical raw materials has been improved in many conventional and industrial areas. With the emergence of newly developing fields, e.g., ultraprecision tools, new generation solar cells, biomedical devices, and marine instruments, coatings with remarkable functional properties are in high demand. For example, high hardness and a low friction coefficient are necessary for tool coatings. Biomedical implants require chemical inertness, biocompatibility, and antibacterial efficiency.

Key issues for coating systems concern nucleation, growth, and the adhesion of the coating to substrates and, concomitantly, implementing deposition procedure strategies that enable the multifunctionality of the coating, i.e., by tailoring the topography (roughness) and electrical conductivity. Facile and economically viable coating deposition processes combined with excellent adhesion, resistance, and multifunctionality will improve current industrial processes and enable novel applications in the future.

This Special Issue aims to address the latest trends in advanced coatings. The coating technology and excellent properties are highlighted with a focus on applications in various fields, topics of interest include but are not limited to the following:

  • Thin metal oxide and metal chalcogenide films, layers, nanoparticles, nanotubes, nanostructures, and stacks;
  • Barrier or buffer metal oxide coatings;
  • Light harvesting metal chalcogenide and oxide coatings.

Dr. Atanas Katerski
Guest Editor

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Keywords

  • film and coating characterization
  • thin films
  • nanostructured surfaces
  • nanomaterials
  • solar cells

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Published Papers (2 papers)

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Research

12 pages, 2641 KiB  
Article
Optical Properties in Mid-Infrared Range of Silicon Oxide Thin Films with Different Stoichiometries
by Natalia Herguedas and Enrique Carretero
Nanomaterials 2023, 13(20), 2749; https://doi.org/10.3390/nano13202749 - 12 Oct 2023
Cited by 6 | Viewed by 2592
Abstract
SiOx thin films were prepared using magnetron sputtering with different O2 flow rates on a silicon substrate. The samples were characterized using Fourier transform infrared spectroscopy in transmission and reflection, covering a spectral range of 5 to 25 μm. By employing [...] Read more.
SiOx thin films were prepared using magnetron sputtering with different O2 flow rates on a silicon substrate. The samples were characterized using Fourier transform infrared spectroscopy in transmission and reflection, covering a spectral range of 5 to 25 μm. By employing a multilayer model, the values of the complex refractive index that best fit the experimental transmission and reflection results were optimized using the Brendel–Bormann oscillator model. The results demonstrate the significance of selecting an appropriate range of O2 flow rates to modify the SiOx stoichiometry, as well as how the refractive index values can be altered between those of Si and SiO2 in the mid-infrared range. Full article
(This article belongs to the Special Issue Preparation and Characterization of Coatings with Special Properties)
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11 pages, 4931 KiB  
Article
Investigation of the Optical Nonlinearity for Au Plasmonic Nanoparticles Based on Ion Implantation
by Huiyuan Chu, Hongpei Wang, Yancheng Huang, Hao Dai, Menglu Lv, Ziyang Zhang and Cheng Jiang
Nanomaterials 2023, 13(19), 2662; https://doi.org/10.3390/nano13192662 - 28 Sep 2023
Cited by 3 | Viewed by 1127
Abstract
The Au ion implantation process has emerged as an effective and simple method to be utilized for the fabrication of opto-electronic materials and devices due to numerous fascinating features of Au nanoparticles such as surface plasmon resonance (SPR), large third-order nonlinearity and a [...] Read more.
The Au ion implantation process has emerged as an effective and simple method to be utilized for the fabrication of opto-electronic materials and devices due to numerous fascinating features of Au nanoparticles such as surface plasmon resonance (SPR), large third-order nonlinearity and a fast response time. In this paper, we describe the fabrication of a novel Au nanoparticle saturable absorber (Au NP-SA) by embedding the Au NPs into a SiO2 thin film using the ion implantation process, which shows excellent saturable absorption features due to the localized surface plasmon resonance (LSPR) effect of Au NPs. A stable and high-quality pulsed laser with a repetition rate of 33.3 kHz and a single pulse energy of 11.7 nJ was successfully constructed with the Au NP-SA. Both the stable operation characteristic of the obtained Q-switched pulsed laser and the high repeatability of the fabrication process of the Au NP-SA were demonstrated. In addition, the simple feasibility and maturity of the ion implantation process allow for the plasmonic nanoparticles to be easily integrated into other types of opto-electronic materials and devices to further improve their performance, and shows immense potential for the production of wafer-level products. Full article
(This article belongs to the Special Issue Preparation and Characterization of Coatings with Special Properties)
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