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Modification and Technology of Nanoparticles and Thin Films
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Modification and Technology of Nanoparticles and Thin Films

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 796

Special Issue Editors

Dr. Arturo Méndez-López

E-Mail Website
Guest Editor
Faculty of Engineering, Autonomous University of Querétaro, Queretaro 76010, Mexico
Interests: thin films; nanoparticles; photocatalysis; semiconductors; solar cells
Dr. Yuliana de Jesus Acosta-Silva

E-Mail Website
Guest Editor
Faculty of Engineering, Autonomous University of Querétaro, Queretaro 76010, Mexico
Interests: thin films; nanoparticles; photocatalysis

Special Issue Information

Dear Colleagues,

Nowadays, there is a lot of interest in nanomaterials. Around the world, more and more projects utilizing nanomaterials are being developed. Catalysts, lubricant additives, heat-transfer nanofluids, electrical and optical device manufacturing, conductive inks, solar energy conversion materials, and biosensors are a few examples of nanoparticle applications. Developments in thin-film growing methods have made it possible to access structures and phases that are not accessible by conventional chemical methods. Additionally, strain engineering has made it possible to alter the characteristics of materials that are already in use. The availability of thin-film samples and a wide range of analytical instruments has made it easier to characterize the behavior of different nanomaterials and has made it possible to develop a variety of semiconductor devices.

This scope of this Special Issue will serve as a forum for papers in the following fields of research:

  • Theoretical and experimental research, knowledge, updates and new ideas in coating.
  • Development of organic, inorganic, and hybrid coatings.
  • Thin films produced by different processes, including but not limited to dip-coating, spin-coating, pyrolysis spray, CVD, sputtering, etc.
  • Divers’ degradation mechanisms.
  • Degradation for environmental applications.
  • Development of methods considering the interplay between mechanical, chemical, and electrochemical interactions.
  • Computer modeling and simulation to predict properties of nanomaterials.
  • Synthesis and characterization of various nanomaterials.
  • Production and characterization of fuels by various methods.

Dr. Arturo Méndez-López
Dr. Yuliana de Jesus Acosta-Silva
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. Coatings is an international peer-reviewed open access monthly 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 2600 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

  • semiconductors
  • nanoparticles
  • photocatalytic
  • thin-film coatings

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

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Research

19 pages, 15431 KiB  
Article
Effect of Fe2O3@SiO2 Core–Shell Nanoparticle Doping Ratio on Color Appearance of Synthetic Opal Films Inspired by Natural Fire Opal
by Bowen Li and Andy Hsitien Shen
Coatings 2025, 15(6), 646; https://doi.org/10.3390/coatings15060646 - 27 May 2025
Viewed by 563
Abstract
Synthetic opal-based photonic materials with tunable optical properties not only exhibit significant application potential but also provide valuable models in terms of understanding color formation mechanisms in natural gemstones. Inspired by natural fire opals containing small amounts of Fe2O3 nanoparticle [...] Read more.
Synthetic opal-based photonic materials with tunable optical properties not only exhibit significant application potential but also provide valuable models in terms of understanding color formation mechanisms in natural gemstones. Inspired by natural fire opals containing small amounts of Fe2O3 nanoparticle inclusions (0 wt%~0.23 wt%), we fabricated short-range ordered opal films doped with low concentrations (0 wt%~2.00 wt%) of Fe2O3@SiO2 core–shell nanoparticles using a modified vertical deposition method. The Fe2O3@SiO2 nanoparticles were synthesized via a sol–gel process to encapsulate the Fe2O3 core with a 10-nm-thick SiO2 shell, preventing agglomeration and enhancing the chemical stability. Experimental results show that even small amounts of doping significantly affect the reflection peak intensity of the films, leading to notable color appearance changes. Combined with numerical simulations, we attribute this modulation to both light absorption and backward scattering effects introduced by the doped nanoparticles. Moreover, the numerical simulation results for Fe2O3 nanoparticles and Fe2O3@SiO2 nanoparticles (with a 10 nm silica shell and similar particle size) show comparable optical properties, suggesting that such inclusions may contribute similarly to the color formation mechanisms in natural fire opals. This work demonstrates that low-concentration Fe2O3@SiO2 NP doping provides an effective strategy to tune the color appearance of opal films, with implications for both structural color material development and gemological research. Full article
(This article belongs to the Special Issue Modification and Technology of Nanoparticles and Thin Films)
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