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Nanomaterials
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Novel Nanocomposites: Optical, Electrical, Mechanical and Surface-Related Properties (2nd Edition)
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Novel Nanocomposites: Optical, Electrical, Mechanical and Surface-Related Properties (2nd Edition)

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (30 October 2024) | Viewed by 7975

Special Issue Editors

Dr. Mirela Suchea

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Guest Editor
1. Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71004 Heraklion, Crete, Greece
2. National Institute for R&D in Microtechnologies - IMT Bucharest 126A Erou Iancu Nicolae St., 077190 Bucharest, Romania
Interests: nanotechnology; materials rngineering and applications: photocatalytic materials, materials for envinronmental and clean energy applications; composite materials for electromagnetic shielding; transparent electrode materials development including graphene (synthesis, deposition and functionalization); colloidal synthesis of metal nanoparticles; surface modification of metal oxide; graphene oxide and reduced graphene oxide films using metal nanoparticles for plasmonic effects on optical properties and silicon rubber based composite insulators for high voltage applications
Special Issues, Collections and Topics in MDPI journals
Dr. Petronela Pascariu

E-Mail Website
Guest Editor
1. ”Petru Poni” Institute of Macromolecular Chemistry, 41A Gr. Ghica Voda Alley, 700487 Iaşi, Romania
2. National Institute for R&D in Microtechnologies - IMT Bucharest 126A Erou Iancu Nicolae St., 077190 Bucharest, Romania
3. Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71004 Heraklion, Crete, Greece
Interests: design; synthesis and investigation of nanoparticles; thin films and multilayers nanowires; metal oxide ceramic nanofibers based on ZnO and TiO2 doped with Ni, Co, Ag, La, Er, Sm, Mo, etc. composites; polymer/inorganic nanoparticles nanostructures, with specific optical; electrical; photocatalytic and magnetic properties for use in various modern applications (photocatalysis, sensors, electronics and optoelectronics, electrochemical supercapacitors, etc.), which are obtained by electrochemical and electrospinning method, respectively
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Emmanouel Koudoumas

E-Mail Website
Guest Editor
1. National Institute for R&D in Microtechnologies - IMT Bucharest 126A Erou Iancu Nicolae St., 077190 Bucharest, Romania
2. Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71004 Heraklion, Crete, Greece
Interests: nanomaterials; polymer nanocomposites; electrochromic layers; thermochromic layers; metal oxides; carbon allotropes; electromagnetic shielding; transparent electrodes; photocatalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of novel nanocomposite materials with enhanced physical and chemical properties is one of the emergent topics of recent years. Since the development of affordable and available commercially nanomaterials, nanocomposites have become a most desirable product. The development of novel nanocomposites with enhanced optical properties has become of great interest for domains such as data transmission, sensors, nonlinear optics devices, etc. Electric/dielectric nanocomposites are significant in the research of novel supercapacitors or other renewable energy applications, nanocomposites with specific surface properties have become extremely attractive for antistatic, antibacterial and photocatalytic functional surface applications, and enhanced mechanical properties are desirable for a plethora of needs in transportation, home appliances, architectural applications. Simultaneously possessing more than one functionality is possible when employing nanocomposite materials if the synergistic effect of nano-components/matrix properties is achieved. The present Special Issue aims to address a broad range of subjects, from nanocomposite synthesis/fabrication, to the design and characterization of various nanocomposite materials with enhanced optical, electrical, mechanical, and surface-related properties, to the practical application of nanocomposites. The format of welcome articles includes original full papers, communications, and reviews.

Potential topics include, but are not limited to, the following:

  • Nanocomposite materials with enhanced optical properties;
  • Nanocomposite materials with enhanced electrical properties;
  • Nanocomposite materials with enhanced surface related properties;
  • Nanocomposite materials with enhanced mechanical properties.

Dr. Mirela Suchea
Dr. Petronela Pascariu
Prof. Dr. Emmanouel Koudoumas
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

  • nanocomposites materials
  • advanced applications
  • optical properties
  • electrical properties
  • mechanical properties
  • surface-related properties

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Published Papers (4 papers)

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Research

11 pages, 3888 KiB  
Article
Prediction of Mechanical Properties of Nano-Clay-Based Biopolymeric Composites
by Rodica Cristina Voicu, Mihai Gologanu, Catalin Tibeica, Mercedes Santiago-Calvo, María Asensio, Esteban Cañibano, Oana Nedelcu and Titus Sandu
Nanomaterials 2024, 14(17), 1403; https://doi.org/10.3390/nano14171403 - 28 Aug 2024
Viewed by 670
Abstract
An understanding of the mechanical behavior of polymeric materials is crucial for making advancements in the applications and efficiency of nanocomposites, and encompasses their service life, load resistance, and overall reliability. The present study focused on the prediction of the mechanical behavior of [...] Read more.
An understanding of the mechanical behavior of polymeric materials is crucial for making advancements in the applications and efficiency of nanocomposites, and encompasses their service life, load resistance, and overall reliability. The present study focused on the prediction of the mechanical behavior of biopolymeric nanocomposites with nano-clays as the nanoadditives, using a new modeling and simulation method based on Comsol Multiphysics software 6.1. This modeling considered the complex case of flake-shaped nano-clay additives that could form aggregates along the polymeric matrix, varying the nanoadditive thickness, and consequently affecting the resulting mechanical properties of the polymeric nanocomposite. The polymeric matrix investigated was biopolyamide 11 (BIOPA11). Several BIOPA11 samples reinforced with three different contents of nano-clays (0, 3, and 10 wt%), and with three different nano-clay dispersion grades (employing three different extrusion screw configurations) were obtained by the compounding extrusion process. The mechanical behavior of these samples was studied by the experimental tensile test. The experimental results indicate an enhancement of Young’s modulus as the nano-clay content was increased from 0 to 10 wt% for the same dispersion grades. In addition, the Young’s modulus value increased when the dispersion rate of the nano-clays was improved, showing the highest increase of around 93% for the nanocomposite with 10 wt% nano-clay. A comparison of the modeled mechanical properties and the experimental measurements values was performed to validate the modeling results. The simulated results fit well with the experimental values of Young’s modulus. Full article
(This article belongs to the Special Issue Novel Nanocomposites: Optical, Electrical, Mechanical and Surface-Related Properties (2nd Edition))
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28 pages, 8489 KiB  
Article
Microstructural, Electrical, and Tribomechanical Properties of Mo-W-C Nanocomposite Films
by Kateryna Smyrnova, Volodymyr I. Ivashchenko, Martin Sahul, Ľubomír Čaplovič, Petro Skrynskyi, Andrii Kozak, Piotr Konarski, Tomasz N. Koltunowicz, Piotr Galaszkiewicz, Vitalii Bondariev, Pawel Zukowski, Piotr Budzynski, Svitlana Borba-Pogrebnjak, Mariusz Kamiński, Lucia Bónová, Vyacheslav Beresnev and Alexander Pogrebnjak
Nanomaterials 2024, 14(12), 1061; https://doi.org/10.3390/nano14121061 - 20 Jun 2024
Viewed by 1400
Abstract
This study investigates the phase composition, microstructure, and their influence on the properties of Mo-W-C nanocomposite films deposited by dual-source magnetron sputtering. The synthesised films consist of metal carbide nanograins embedded in an amorphous carbon matrix. It has been found that nanograins are [...] Read more.
This study investigates the phase composition, microstructure, and their influence on the properties of Mo-W-C nanocomposite films deposited by dual-source magnetron sputtering. The synthesised films consist of metal carbide nanograins embedded in an amorphous carbon matrix. It has been found that nanograins are composed of the hexagonal β-(Mo2 + W2)C phase at a low carbon source power. An increase in the power results in the change in the structure of the carbide nanoparticles from a single-phase to a mixture of the β-(Mo2 + W2)C and NaCl-type α-(Mo + W)C(0.65≤k≤1) solid-solution phases. The analysis of electrical properties demonstrates that the nanograin structure of the films favours the occurrence of hopping conductivity. The double-phase structure leads to a twofold increase in the relaxation time compared to the single-phase one. Films with both types of nanograin structures exhibit tunnelling conductance without the need for thermal activation. The average distance between the potential wells produced by the carbide nanograins in nanocomposite films is approximately 3.4 ± 0.2 nm. A study of tribomechanical properties showed that Mo-W-C films composed of a mixture of the β-(Mo2 + W2)C and α-(Mo + W)C(0.65≤k≤1) phases have the highest hardness (19–22 GPa) and the lowest friction coefficient (0.15–0.24) and wear volume (0.00302–0.00381 mm2). Such a combination of electrical and tribomechanical properties demonstrates the suitability of Mo-W-C nanocomposite films for various micromechanical devices and power electronics. Full article
(This article belongs to the Special Issue Novel Nanocomposites: Optical, Electrical, Mechanical and Surface-Related Properties (2nd Edition))
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20 pages, 5113 KiB  
Article
Effect of Deposition Working Power on Physical Properties of RF-Sputtered CdTe Thin Films for Photovoltaic Applications
by Ana-Maria Răduță, Ana-Maria Panaitescu, Marina Manica, Sorina Iftimie, Vlad-Andrei Antohe, Ovidiu Toma, Adrian Radu, Lucian Ion, Mirela Petruta Suchea and Ștefan Antohe
Nanomaterials 2024, 14(6), 535; https://doi.org/10.3390/nano14060535 - 18 Mar 2024
Viewed by 1581
Abstract
The main objective of this study was to determine the variation in the properties of cadmium telluride (CdTe) thin films deposited on a p-type Si substrate by the radio frequency magnetron sputtering technique at four different working powers (70 W, 80 W, 90 [...] Read more.
The main objective of this study was to determine the variation in the properties of cadmium telluride (CdTe) thin films deposited on a p-type Si substrate by the radio frequency magnetron sputtering technique at four different working powers (70 W, 80 W, 90 W, and 100 W). The substrate temperature, working pressure, and deposition time during the deposition process were kept constant at 220 °C, 0.46 Pa, and 30 min, respectively. To study the structural, morphological, and optical properties of the CdTe films grown under the mentioned experimental conditions, X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and optical spectroscopy were used. For a better analysis of the films’ structural and optical properties, a group of films were deposited onto optical glass substrates under similar deposition conditions. The electrical characterisation of Ag/CdTe/Al “sandwich” structures was also performed using current–voltage characteristics in the dark at different temperatures. The electrical measurements allowed the identification of charge transport mechanisms through the structure. New relevant information released by the present study points towards 90 W RF power as the optimum for obtaining a high crystallinity of ~1 μm nanostructured thin films deposited onto p-Si and optical glass substrates with optical and electrical properties that are suitable for use as absorber layers. The obtained high-quality CdTe nanostructured thin films are perfectly suitable for use as absorbers in CdTe thin-film photovoltaic cells. Full article
(This article belongs to the Special Issue Novel Nanocomposites: Optical, Electrical, Mechanical and Surface-Related Properties (2nd Edition))
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15 pages, 4426 KiB  
Article
Chiroptically Active Multi-Modal Calcium Carbonate-Based Nanocomposites
by Fearghal C. Donnelly, Finn Purcell-Milton, Eoin Caffrey, Lorenzo Branzi, Shelley Stafford, Faisal Ali Alhammad, Olan Cleary, Munirah Ghariani, Vera Kuznetsova and Yurii K. Gun’ko
Nanomaterials 2024, 14(1), 100; https://doi.org/10.3390/nano14010100 - 31 Dec 2023
Viewed by 1674
Abstract
The development of multimodal nano- and micro-structures has become an increasingly popular area of research in recent years. In particular, the combination of two or more desirable properties within a single structure opens multiple opportunities from biomedicine, sensing, and catalysis, to a variety [...] Read more.
The development of multimodal nano- and micro-structures has become an increasingly popular area of research in recent years. In particular, the combination of two or more desirable properties within a single structure opens multiple opportunities from biomedicine, sensing, and catalysis, to a variety of optical applications. Here, for the first time, we report the synthesis and characterization of multimodal chiroptically active CaCO3 nanocomposites. These composites have been prepared by a modified microemulsion method in the presence of an amino acid (cysteine). Following this, additional modalities have been introduced by loading the composites with luminescent nanoparticles or doping with Eu3+ ions. The luminescent composites have been produced by the incorporation of CuInZnS/ZnS or CdSe@ZnS/ZnS core/shell quantum dots, or via doping with trivalent europium. In this manner, we have produced chiroptically active composites with orange, green, and red luminescence. Overall, this work demonstrates the unique advantage and potential of our approach and new class of chiroptically active CaCO3 nanocomposites, which display tunable functionality to specific requirements via the incorporation of desired ions, nanoparticles, and chirality of the structure. Full article
(This article belongs to the Special Issue Novel Nanocomposites: Optical, Electrical, Mechanical and Surface-Related Properties (2nd Edition))
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