Novel Materials with Target Functionalities

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanofabrication and Nanomanufacturing".

Deadline for manuscript submissions: closed (10 August 2024) | Viewed by 4716

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Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iasi, Romania
Interests: physics of advanced materials–nanoparticle synthesis; thin film deposition (sputtering, thermal vacuum deposition, spin coating); characterization (XRD, XPS, UV-Vis, FTIR, EPR) transport phenomena; functional properties (electrical properties, effect hall, optical properties, magnetic properties, sensing properties); advanced applications
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Institut Materiaux Microelectronique Nanosciences de Provence, 142 Av. Escadrille Normandie Niemen, 13013 Marseille, France
Interests: nanostructures Si (Ge); self-assembly, nanostructuring; doping type n (Sb) and type p (B); instability of growth and ionic erosion; relaxation of constraints
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Department of Electronics and Materials Science, Faculty of Engineering, Graduate School of Science and Technology, Shizuoka University, Johoku 3-5-1, Shizuoka 432-8011, Japan
Interests: semiconductor nanoscale devices; single-electron tunneling via dopant-atoms in Si nano-transistors (low and high temperatures); atomistic effects in transport through low-dimensional pn diodes and pin diodes (including tunnel diodes); nanostructure/nanodevice fabrication and basic characterization; first-principles simulations of semiconductor nanostructures
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Materials Design Center, Research Institute of KUT, Kochi University of Technology, Kochi 782-8502, Japan
Interests: condensed matter physics; film growth technology; solid state crystallization; characterization; first-principles calculation of wideband-gap semiconductors; induced oxide-specific function generation; tailored functional oxide (T-FOX) films; light emitting diodes (LEDs) in the ultraviolet wavelength region; highly transparent conductive oxides (TCO) electrodes for use in flat panel display; LCD TV and in solar cells; IR-plasmonic applications; gas (H2, CO) sensors; antibacterial materials
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Special Issue Information

Dear Colleagues,

The exploration of innovative materials involves the development of new efficient materials with innovative functions for advanced applications and the explanation of a diversity of phenomena.

Scientists continuously envision and develop new compounds, often using theoretical tools to explain some of the observed properties of the novel materials. The collaboration between theory and experiment has in many cases helped to obtain synthesizable compounds with required functionalities.

Studies of fundamental physicochemical properties such as electro-negativity or phase-transition behavior developed on certain material classes have revealed novel functionalities such as thermoelectricity, piezoelectricity, transparent conductors, topological insulators, etc. Nanotechnologies permit the synthesis of certain artificial nanostructures exhibiting quantum Hall effect or Coulomb and spin blockade, and are very attractive for transistors and lasers. They also enable the synthesis of so-called exotic materials exhibiting exotic properties, such as unconventional superconductivity, reduced magnetism, reduced Pauli repulsion, etc.

Technological applications require materials with two or more properties (transparent conductors, photovoltaic absorbers, etc.) that generally cannot be obtained using traditional methods, and which require the application of material design and theoretical predictions.

In many situations, materials properties can be induced and controlled by defects. This is a difficult task, but there are important results showing that controlled doping associated to treatments (thermal, irradiation, etc.) enable the targeted functionalities to be achieved (high carrier transport, light emitting, high Curie ferromagnetic temperature, high polarization, high selective sensing, etc.). Important results have also been obtained in the development of nanocomposite materials (multicomponent nanostructures, colloids, matrix-dispersed composite materials, mesoscale particles) that exhibit target functionalities by controlling surface and interface phenomena.

This Special Issue covers all types of materials with target functionalities (inorganic, organic, hybrid, thin films, artificial structures, nanocomposites, colloids) and welcomes papers addressing topics including but not limited to the following:

  • Processing methods and technologies for novel materials with target functionalities;
  • Structural and functional characterization studies;
  • Theoretical models and simulations for materials’ electronic structure and for phenomena observed in novel materials;
  • Advanced applications of novel materials with target functionalities.

This Issue will include both reviews and original research papers that include theories and experiments on novel materials with target functionalities, on materials processing and characterization, and on all types of interactions and phenomena that explain materials’ target functionalities.

Prof. Dr. Felicia Iacomi
Dr. Isabelle Berbezier
Dr. Daniel Moraru
Prof. Dr. Tetsuya Yamamoto
Guest Editors

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Keywords

  • novel materials
  • artificial materials
  • exotic materials
  • processing techniques
  • characterization techniques
  • theoretical models and simulations
  • applications

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Published Papers (4 papers)

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Research

15 pages, 5008 KiB  
Article
Effect of Femtosecond Laser-Irradiated Titanium Plates on Enhanced Antibacterial Activity and Preservation of Bacteriophage Stability
by Liga Grase, Pavels Onufrijevs, Dace Rezevska, Karlis Racenis, Ingus Skadins, Jonas Karosas, Paulius Gecys, Mairis Iesalnieks, Arturs Pludons, Juta Kroica and Gediminas Raciukaitis
Nanomaterials 2023, 13(14), 2032; https://doi.org/10.3390/nano13142032 - 9 Jul 2023
Cited by 4 | Viewed by 1941
Abstract
Titanium (Ti) is widely recognized for its exceptional properties and compatibility with medical applications. In our study, we successfully formed laser-induced periodic surface structures (LIPSS) on Ti plates with a periodicity of 520–740 nm and a height range of 150–250 nm. To investigate [...] Read more.
Titanium (Ti) is widely recognized for its exceptional properties and compatibility with medical applications. In our study, we successfully formed laser-induced periodic surface structures (LIPSS) on Ti plates with a periodicity of 520–740 nm and a height range of 150–250 nm. To investigate the morphology and chemical composition of these surfaces, we employed various techniques, including field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. Additionally, we utilized a drop-shape analyzer to determine the wetting properties of the surfaces. To evaluate the antibacterial activity, we followed the ISO 22196:2011 standard, utilizing reference bacterial cultures of Gram-positive Staphylococcus aureus (ATCC 25923) and Gram-negative Escherichia coli (ATCC 25922). The results revealed enhanced antibacterial properties against Staphylococcus aureus by more than 99% and Escherichia coli by more than 80% in comparison with non-irradiated Ti. Furthermore, we conducted experiments using the Escherichia coli bacteriophage T4 (ATCC 11303-B4) and the bacterial host Escherichia coli (ATCC 11303) to investigate the impact of Ti plates on the stability of the bacteriophage. Overall, our findings highlight the potential of LIPSS on Ti plates for achieving enhanced antibacterial activity against common bacterial strains while maintaining the stability of bacteriophages. Full article
(This article belongs to the Special Issue Novel Materials with Target Functionalities)
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12 pages, 2352 KiB  
Article
Multi-Spiral Laser Patterning of Azopolymer Thin Films for Generation of Orbital Angular Momentum Light
by Alexey P. Porfirev, Nikolay A. Ivliev, Sergey A. Fomchenkov and Svetlana N. Khonina
Nanomaterials 2023, 13(3), 612; https://doi.org/10.3390/nano13030612 - 3 Feb 2023
Cited by 3 | Viewed by 2175
Abstract
Recently, the realization of the spiral mass transfer of matter has attracted the attention of many researchers. Nano- and microstructures fabricated with such mass transfer can be used for the generation of light with non-zero orbital angular momentum (OAM) or the sensing of [...] Read more.
Recently, the realization of the spiral mass transfer of matter has attracted the attention of many researchers. Nano- and microstructures fabricated with such mass transfer can be used for the generation of light with non-zero orbital angular momentum (OAM) or the sensing of chiral molecules. In the case of metals and semiconductors, the chirality of formed spiral-shaped microstructures depends on the topological charge (TC) of the illuminating optical vortex (OV) beam. The situation is quite different with polarization-sensitive materials such as azopolymers, azobenzene-containing polymers. Azopolymers show polarization-sensitive mass transfer both at the meso and macro levels and have huge potential in diffractive optics and photonics. Previously, only one-spiral patterns formed in thin azopolymer films using circularly polarized OV beams and double-spiral patterns formed using linearly polarized OV beams have been demonstrated. In these cases, the TC of the used OV beams did not affect the number of formed spirals. In this study, we propose to use two-beam (an OV and a Gaussian beam with a spherical wavefront) interference lithography for realization spiral mass transfer with the desired number of formed spirals. The TC of the OV beam allows for controlling the number of formed spirals. We show the microstructures fabricated by the laser processing of thin azopolymer films can be used for the generation of OAM light at the microscale with the desired TC. The experimentally obtained results are in good agreement with the numerically obtained results and demonstrate the potential of the use of such techniques for the laser material processing of polarization-sensitive materials. Full article
(This article belongs to the Special Issue Novel Materials with Target Functionalities)
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12 pages, 2458 KiB  
Article
Variable-Barrier Quantum Coulomb Blockade Effect in Nanoscale Transistors
by Pooja Yadav, Soumya Chakraborty, Daniel Moraru and Arup Samanta
Nanomaterials 2022, 12(24), 4437; https://doi.org/10.3390/nano12244437 - 13 Dec 2022
Cited by 3 | Viewed by 2379
Abstract
Current–voltage characteristics of a quantum dot in double-barrier configuration, as formed in the nanoscale channel of silicon transistors, were analyzed both experimentally and theoretically. Single electron transistors (SET) made in a SOI-FET configuration using silicon quantum dot as well as phosphorus donor quantum [...] Read more.
Current–voltage characteristics of a quantum dot in double-barrier configuration, as formed in the nanoscale channel of silicon transistors, were analyzed both experimentally and theoretically. Single electron transistors (SET) made in a SOI-FET configuration using silicon quantum dot as well as phosphorus donor quantum dots were experimentally investigated. These devices exhibited a quantum Coulomb blockade phenomenon along with a detectable effect of variable tunnel barriers. To replicate the experimental results, we developed a generalized formalism for the tunnel-barrier dependent quantum Coulomb blockade by modifying the rate-equation approach. We qualitatively replicate the experimental results with numerical calculation using this formalism for two and three energy levels participated in the tunneling transport. The new formalism supports the features of most of the small-scaled SET devices. Full article
(This article belongs to the Special Issue Novel Materials with Target Functionalities)
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16 pages, 9426 KiB  
Article
Multi-Directional Cloak Design by All-Dielectric Unit-Cell Optimized Structure
by Muratcan Ayik, Hamza Kurt, Oleg V. Minin, Igor V. Minin and Mirbek Turduev
Nanomaterials 2022, 12(23), 4194; https://doi.org/10.3390/nano12234194 - 25 Nov 2022
Viewed by 2364
Abstract
In this manuscript, we demonstrate the design and experimental proof of an optical cloaking structure that multi-directionally conceals a perfectly electric conductor (PEC) object from an incident plane wave. The dielectric modulation around the highly reflective scattering PEC object is determined by an [...] Read more.
In this manuscript, we demonstrate the design and experimental proof of an optical cloaking structure that multi-directionally conceals a perfectly electric conductor (PEC) object from an incident plane wave. The dielectric modulation around the highly reflective scattering PEC object is determined by an optimization process for multi-directional cloaking purposes. Additionally, to obtain the multi-directional effect of the cloaking structure, an optimized slice is mirror symmetrized through a radial perimeter. The three-dimensional (3D) finite-difference time-domain method is integrated with genetic optimization to achieve a cloaking design. In order to overcome the technological problems of the corresponding devices in the optical range and to experimentally demonstrate the proposed concept, our experiments were carried out on a scale model in the microwave range. The scaled proof-of-concept of the proposed structure is fabricated by 3D printing of polylactide material, and the brass metallic alloy is used as a perfect electrical conductor for microwave experiments. A good agreement between numerical and experimental results is achieved. The proposed design approach is not restricted only to multi-directional optical cloaking but can also be applied to different cloaking scenarios dealing with electromagnetic waves at nanoscales as well as other types such as acoustic waves. Using nanotechnology, our scale proof-of-concept research will take the next step toward the creation of “optical cloaking” devices. Full article
(This article belongs to the Special Issue Novel Materials with Target Functionalities)
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