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Nanomaterial Thin Films and Structures: Future and Development
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Nanomaterial Thin Films and Structures: Future and Development

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: closed (15 March 2023) | Viewed by 7917

Special Issue Editors

Dr. Vladimir Smirnov

E-Mail Website
Guest Editor
Department of Radioelectronics and Nanoelectronics, Institute of Nanotechnologies, Electronics and Electronic Equipment Engineering, Southern Federal University, 347922 Taganrog, Russia
Interests: nanotechnology; nanomaterials; scanning probe microscopy; nanolithography; oxide nanostructures; thin films; carbon nanotubes; 2D materials; neuromorphic systems; memristor; RRAM; bionanotechnology
Dr. Aleksandr Fedotov

E-Mail Website
Guest Editor
Department of Radioelectronics and Nanoelectronics, Institute of Nanotechnologies, Electronics and Electronic Equipment Engineering, Southern Federal University, 347922 Taganrog, Russia
Interests: nanotechnology; nanoelectronics; nanostructured materials; thin films; carbon nanotubes; graphene; PECVD; hybrid nanostructures; scanning probe microscopy; electron microscopy

Special Issue Information

Dear Colleagues,

Currently, nanotechnology and nanoscience are key drivers of technological evolution. Nanotechnology is an interdisciplinary science that deals with physics, chemistry, biology, and engineering sciences. Progress in the synthesis of new functional nanomaterials has allowed significant strides in the development of neuroscience, artificial intelligence, and brain-like electronics. This Special Issue focuses on novel research in the design, synthesis, nanodiagnostics, functioning, and applications of nanomaterials in bionanotechnology, neuroelectronics, artificial intelligence, and biosensors based on different thin films and nanostructures. However, obtaining thin films with desirable properties and their characterization are still challenging aspects. This Special Issue aims to present the results of the synthesis, characterization, and application of functional thin-film nanomaterials in the fields of nanobiotechnology and artificial intelligence.

Topics covered include, but are not limited to:

  • Synthesis and reliability of nanomaterial thin films and structures;
  • New approaches for characterization of nanomaterial thin films and structures;
  • Nanomaterial thin films and structures for bionanotechnology and neuromorphic devices;
  • Nanocomposites and multilayer structures;
  • Nanomaterial thin film growth and functioning simulation;
  • Electronic devices based on nanomaterial thin films and structures.

Dr. Vladimir Smirnov
Dr. Aleksandr Fedotov
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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • nanomaterials
  • bionanotechnology
  • neuroelectronics
  • artificial intelligence
  • biosensors
  • nanodiagnostics
  • thin films
  • oxide materials
  • nanostructures, molecular dynamics simulation

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

Published Papers (4 papers)

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Research

16 pages, 5717 KiB  
Article
Nano-Biocomposite Materials Obtained from Laser Ablation of Hemp Stalks for Medical Applications and Potential Component in New Solar Cells
by Alexandru Cocean, Georgiana Cocean, Maria Diaconu, Silvia Garofalide, Francisca Husanu, Bogdanel Silvestru Munteanu, Nicanor Cimpoesu, Iuliana Motrescu, Ioan Puiu, Cristina Postolachi, Iuliana Cocean and Silviu Gurlui
Int. J. Mol. Sci. 2023, 24(4), 3892; https://doi.org/10.3390/ijms24043892 - 15 Feb 2023
Cited by 4 | Viewed by 1975
Abstract
The study in this paper presents a new material that was produced as a thin film by the Pulsed Laser Deposition technique (PLD) using a 532 nm wavelength and 150 mJ/pulse laser beam on the hemp stalk as target. The analyses performed by [...] Read more.
The study in this paper presents a new material that was produced as a thin film by the Pulsed Laser Deposition technique (PLD) using a 532 nm wavelength and 150 mJ/pulse laser beam on the hemp stalk as target. The analyses performed by spectroscopic techniques (Fourier Transform Infrared Spectroscopy—FTIR, Laser—Induced Fluorescence Spectroscopy—LIF, Scanning Electron Microscopy coupled with Energy Dispersive X-ray—SEM-EDX, Atomic Force Microscopy—AFM and optical microscope) evidenced that a biocomposite consisting of lignin, cellulose, hemicellulose, waxes, sugars and phenolyc acids p-coumaric and ferulic, similar to the hemp stalk target was obtained. Nanostructures and aggregated nanostructures of 100 nm to 1.5 μm size were evidenced. Good mechanical strength and its adherence to the substrate were also noticed. It was noticed that the content in calcium and magnesium increased compared to that of the target from 1.5% to 2.2% and from 0.2% to 1.2%, respectively. The COMSOL numerical simulation provided information on the thermal conditions that explain phenomena and processes during laser ablation such as C-C pyrolisis and enhanced deposition of calcium in the lignin polymer matrix. The good gas and water sorption properties due to the free OH groups and to the microporous structure of the new biocomposite components recommends it for studies for functional applications in medicine for drug delivery devices, filters in dialysis and for gas and liquid sensors. Functional applications in solar cells windows are also possible due to the conjugated structures of the contained polymers. Full article
(This article belongs to the Special Issue Nanomaterial Thin Films and Structures: Future and Development)
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13 pages, 3669 KiB  
Article
Formation and Properties of Thermistor Chips Based on Semiconductor 3D Metal Oxide Films Obtained by RF-Magnetron Sputtering
by Valery Novozhilov and Alexey Belov
Int. J. Mol. Sci. 2023, 24(1), 742; https://doi.org/10.3390/ijms24010742 - 1 Jan 2023
Cited by 3 | Viewed by 1943
Abstract
The formation of oxide semiconductor films of the (Mn,Co,Cu)3O4 type by radio frequency magnetron sputtering is presented. The conditions of deposition and subsequent heat treatment make it possible to obtain films with electrophysical characteristics close to those of the bulk [...] Read more.
The formation of oxide semiconductor films of the (Mn,Co,Cu)3O4 type by radio frequency magnetron sputtering is presented. The conditions of deposition and subsequent heat treatment make it possible to obtain films with electrophysical characteristics close to those of the bulk ceramic materials used as a target for magnetron sputtering. Two variants of thermistor geometry were implemented. In the first case, the working layer of oxide semiconductor was deposited directly on the dielectric substrate (planar geometry), and in the second case on the layer with high electrical conductivity (Ni or Al) forming the inner electrode (layered geometry). The lower limit of the nominal resistance of the planar thermistor while maintaining high temperature nonlinearity is ~ 10 kΩ. The layered structure with the inner electrode makes it possible to reduce the lower limit of resistance up to ~ 50 Ω without losing the temperature nonlinearity of the thermistor. In addition, heat treatment above 450 °C or current self-heating with sufficient power output leads to the appearance of a pronounced voltage nonlinearity, which increases the thermal constant B of thermistors from 2400–3400 to 5000–5500 K. The fields of application of oxide-film structures for the correction of linear resistors and the implementation of integration approaches in the construction of linearized sensors are discussed. Full article
(This article belongs to the Special Issue Nanomaterial Thin Films and Structures: Future and Development)
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11 pages, 10699 KiB  
Article
Effect of Si(111) Surface Modification by Ga Focused Ion Beam at 30 kV on GaAs Nanowire Growth
by Nikita Shandyba, Sergey Balakirev, Vladislav Sharov, Natalia Chernenko, Danil Kirichenko and Maxim Solodovnik
Int. J. Mol. Sci. 2023, 24(1), 224; https://doi.org/10.3390/ijms24010224 - 23 Dec 2022
Cited by 3 | Viewed by 1569
Abstract
This paper presents the results of experimental studies of the effect of Si(111) surface modification by Ga-focused ion beam (FIB) at 30 kV accelerating voltage on the features of the epitaxial GaAs nanowire (NW) growth processes. We experimentally established the regularities of the [...] Read more.
This paper presents the results of experimental studies of the effect of Si(111) surface modification by Ga-focused ion beam (FIB) at 30 kV accelerating voltage on the features of the epitaxial GaAs nanowire (NW) growth processes. We experimentally established the regularities of the Ga ions’ dose effect during surface modification on the structural characteristics of GaAs NW arrays. Depending on the Ga ion dose value, there is one of three modes on the surface for subsequent GaAs NW growth. At low doses, the NW growth is almost completely suppressed. The growth mode of high-density (up to 6.56 µm−2) GaAs NW arrays with a maximum fraction (up to 70%) of nanowires normally oriented to the substrate is realized in the medium ion doses range. A continuous polycrystalline base with a dense array of misoriented short (up to 0.9 µm) and thin (up to 27 nm) GaAs NWs is formed at high doses. We assume that the key role is played by the interaction of the implanted Ga ions with the surface at various process stages and its influence on the surface structure in the modification region and on GaAs NW growth conditions. Full article
(This article belongs to the Special Issue Nanomaterial Thin Films and Structures: Future and Development)
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22 pages, 61314 KiB  
Article
Nanosecond Laser Induced Surface Structuring of Cadmium after Ablation in Air and Propanol Ambient
by Umm-i-Kalsoom, Nisar Ali, Shazia Bashir, Samina Akbar, Muhammad Shahid Rafique, Ali Mohammad Alshehri, Narjis Begum, Tanveer Iqbal and Aneela Anwar
Int. J. Mol. Sci. 2022, 23(21), 12749; https://doi.org/10.3390/ijms232112749 - 22 Oct 2022
Cited by 1 | Viewed by 1691
Abstract
In the present study KrF Excimer laser has been employed to irradiate the Cadmium (Cd) targets for various number of laser pulses of 500, 1000, 1500 and 2000, at constant fluence of 3.6 J cm−2. Scanning Electron Microscopy (SEM) analysis was [...] Read more.
In the present study KrF Excimer laser has been employed to irradiate the Cadmium (Cd) targets for various number of laser pulses of 500, 1000, 1500 and 2000, at constant fluence of 3.6 J cm−2. Scanning Electron Microscopy (SEM) analysis was utilized to reveal the formation of laser induced nano/micro structures on the irradiated target (Cd) surfaces. SEM results show the generation of cavities, cracks, micro/nano wires/rods, wrinkles along with re-deposited particles during irradiation in air, whereas subsurface boiling, pores, cavities and Laser Induced Periodic Surface Structures (LIPSS) on the inner walls of cavities are revealed at the central ablated area after irradiation in propanol. The ablated volume and depth of ablated region on irradiated Cd targets are evaluated for various number of pulses and is higher in air as compared to propanol ambient. Fast Fourier Transform Infrared spectroscopy (FTIR), Energy Dispersive X-ray Spectroscopy (EDS) and X-ray Diffraction (XRD) analyses show the presence of oxides and hydro-oxides of Cd after irradiation in propanol, whereas the existence of oxides is observed after irradiation in air ambient. Nano-hardness tester was used to investigate mechanical modifications of ablated Cd. It reveals an increase in hardness after irradiation which is more pronounced in propanol as compared to air. Full article
(This article belongs to the Special Issue Nanomaterial Thin Films and Structures: Future and Development)
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