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Nanomaterials
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Nanostructured Thin Films: Growth, Characteristics and Applications: 2nd Edition
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Nanostructured Thin Films: Growth, Characteristics and Applications: 2nd Edition

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

Deadline for manuscript submissions: closed (14 November 2025) | Viewed by 3725

Special Issue Editor

Prof. Dr. Kai-Huang Chen

E-Mail Website
Guest Editor
Department of Electronic Engineering, Cheng-Shiu University, Kaohsiung, Taiwan
Interests: non-volatile resistor random memory devices; ferroelectric memory devices; thin films; functional ceramics applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nanotechnology has gradually evolved in recent years, revealing different substances that constitute nanoparticles with several important applications and interesting material properties. Nanotechnology is an applied science that studies the design, composition, properties, and applications of substances and devices at the nanoscale. Thin-film materials are thin metal substances or organic substances with thicknesses ranging from a single atom to a few millimetres. Electronic semiconductor devices and optical coatings are the main applications of thin-film technology today. Thin-film technology has a wide range of applications. Numerous studies have used different thin films for computer storage devices, pharmaceuticals, manufacturing thin-film batteries, dye-sensitized solar cells, and more. In addition, ceramic thin films have a wide range of applications. In response to the relatively high hardness of ceramic materials, thin films have been used to protect substrates from corrosion, oxidation, and wear.

This Special Issue of Nanomaterials aims to collate research on nanostructured thin films, specifically regarding their growth, characteristics, and applications in various fields of technology and science. For this Special Issue, we invite contributions from leading groups in the field with the aim of providing a balanced view of the current state-of-the-art thin-film technology.

Prof. Dr. Kai-Huang Chen
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 250 words) can be sent to the Editorial Office for assessment.

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 2400 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

  • nanostructured
  • nanotechnology
  • nanoscale
  • thin films
  • growth
  • characteristics
  • coatings

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Related Special Issue

Published Papers (3 papers)

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Research

16 pages, 3852 KB  
Article
Effect of Anodization Temperature on the Morphology and Structure of Porous Alumina Formed in Selenic Acid Electrolyte
by Yulia V. Nazarkina, Vladimir B. Zaitsev, Daria A. Dronova, Alexey A. Dronov, Ilia I. Tsiniaikin, Danil D. Butmanov, Timofey P. Savchuk, Ekaterina V. Kytina, Elizaveta A. Konstantinova and Artem V. Marikutsa
Nanomaterials 2025, 15(24), 1855; https://doi.org/10.3390/nano15241855 - 11 Dec 2025
Viewed by 473
Abstract
We report a comprehensive study on the effect of H2SeO4 electrolyte temperature on the composition, defect, morphological, and luminescent properties of porous anodic aluminum oxide (AAO). An increase in the synthesis temperature led to a decrease in the AAO cell [...] Read more.
We report a comprehensive study on the effect of H2SeO4 electrolyte temperature on the composition, defect, morphological, and luminescent properties of porous anodic aluminum oxide (AAO). An increase in the synthesis temperature led to a decrease in the AAO cell diameter from 85–115 nm to 38–58 nm (depending on the electrolyte concentration) and enhanced the etching of the AAO walls, which even resulted in the disintegration of the AAO into individual fibers at 40 °C. The selenium concentration in the samples formed in 0.5–1.5 M H2SeO4 in the temperature range of 5–40 °C did not exceed 2 at.% and fell below the detection limit at 40 °C. The formation of a nanocrystalline Al2O3 phase was observed in the H2SeO4 electrolyte at 40 °C. The samples exhibited weak photoluminescence. We identified three types of paramagnetic centers in AAO formed in H2SeO4: F+ centers (NsF = 8.2 × 1015 g−1), newly discovered centers with an unpaired electron localized on an oxygen atom (NsO = 1017 g−1), and centers associated with selenate radicals (NsS = 6 × 1018 g−1). By comparing the photoluminescence spectra and defect concentrations, we conclude that the luminescence of AAO formed in selenic acid is exclusively due to F+ centers, while other paramagnetic centers do not contribute. Full article
(This article belongs to the Special Issue Nanostructured Thin Films: Growth, Characteristics and Applications: 2nd Edition)
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19 pages, 10730 KB  
Article
Oxygen Ion Concentration Distribution Effect on Bipolar Switching Properties of Neodymium Oxide Film’s Resistance and Random Access Memory Devices
by Kai-Huang Chen, Ming-Cheng Kao, Hsin-Chin Chen and Yao-Chin Wang
Nanomaterials 2025, 15(6), 448; https://doi.org/10.3390/nano15060448 - 15 Mar 2025
Cited by 2 | Viewed by 1090
Abstract
In this study, the bipolar resistance switching behavior and electrical conduction transport properties of a neodymium oxide film’s resistive random access memory (RRAM) devices for using different top electrode materials were observed and discussed. Different related electrical properties and transport mechanisms are important [...] Read more.
In this study, the bipolar resistance switching behavior and electrical conduction transport properties of a neodymium oxide film’s resistive random access memory (RRAM) devices for using different top electrode materials were observed and discussed. Different related electrical properties and transport mechanisms are important factors in applications in a film’s RRAM devices. For aluminum top electrode materials, the electrical conduction mechanism of the neodymium oxide film’s RRAM devices all exhibited hopping conduction behavior, with 1 mA and 10 mA compliance currents in the set state for low/high voltages applied. For TiN and ITO (Indium tin oxide) top electrode materials, the conduction mechanisms all exhibited ohmic conduction for the low voltage applied, and all exhibited hopping conduction behavior for the high voltage applied. In addition, the electrical field strength simulation resulted in an increase in the reset voltage, indicating that oxygen ions have diffused into the vicinity of the ITO electrode during the set operation. This was particularly the case in the three physical models proposed, and based on the relationship between different ITO electrode thicknesses and the oxygen ion concentration distribution effect of the neodymium oxide film’s RRAM devices, they were investigated and discussed. To prove the oxygen concentration distribution expands over the area of the ITO electrode, the simulation software was used to analyze and simulate the distribution of the electric field for the Poisson equation. Finally, the neodymium oxide film’s RRAM devices for using different top electrode materials all exhibited high memory window properties, bipolar resistance switching characteristics, and non-volatile properties for incorporation into next-generation non-volatile memory device applications in this study. Full article
(This article belongs to the Special Issue Nanostructured Thin Films: Growth, Characteristics and Applications: 2nd Edition)
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16 pages, 5470 KB  
Article
Surface Properties of Coatings Based on Iron Amino-Functionalized Oxides Deposited on DH 36 Steel Plates for Shipbuilding
by Maria Luisa Testa, Carla Calabrese, Valeria La Parola, Cristina Scolaro, Annamaria Visco, Simone Cappello and Leonarda Francesca Liotta
Nanomaterials 2025, 15(3), 150; https://doi.org/10.3390/nano15030150 - 21 Jan 2025
Cited by 2 | Viewed by 1538
Abstract
The development of eco-friendly paint formulations is part of the transition process to more sustainable materials, which involves many industries such as offshore and shipbuilding, where the deterioration of steel in seawater is a key factor. This article aims to produce innovative coatings [...] Read more.
The development of eco-friendly paint formulations is part of the transition process to more sustainable materials, which involves many industries such as offshore and shipbuilding, where the deterioration of steel in seawater is a key factor. This article aims to produce innovative coatings and test their protective action on DH 36 steel plates. SiO2 and TiO2 were modified with amino groups and iron sites to be used as filler for the design of ecological paint formulations The antimicrobial features of both NH2 groups and iron ionic species were combined with the chemical and mechanical stability of silica and titania, with silica-based powders showing increased efficacy. The surface properties of the resulting coatings were examined by determination of thickness, water wettability, roughness, and cross-cut adhesion tests (before and after a degradation test in seawater according to ASTM D870-97 standards). Preliminary tests of the microbiological activity of the iron amino functionalized materials were carried out to monitor, as proof of concept, the growth of some bacterial strains through measurements of optical density. The findings indicate that these coatings not only provide effective corrosion protection but are promising for enhancing the durability and environmental performance of steel surfaces exposed to marine environments. Full article
(This article belongs to the Special Issue Nanostructured Thin Films: Growth, Characteristics and Applications: 2nd Edition)
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