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Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related...
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Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related Materials for Future Devices

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "2D and Carbon Nanomaterials".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 12806

Special Issue Editors

Prof. Dr. Salem A. AlFaify

E-Mail Website
Guest Editor
Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
Interests: Nano-quantum structures and their novel properties. Understanding mechanical, tribological, topological, optical, electrical, and magnetic properties of the doped and undoped organic and inorganic low dimensional materials like films and other forms of nanomaterials and looking into the correlation nature of these quantum materials and their novel properties. CNT, Nano-Carbon based materials, metal oxides films for MEMS/NEMS fabrications, field emission and other advanced electronics, solid oxide fuel cells (SOFCs), and photovoltaic devices are also part of my research interests. Lately, my research interest has focused on modern optoelectronics, hydrogen storage, functional wide bandgap semiconductors, nanosensors, smarts and AI-enabling materials.
Dr. Mohd Shkir

E-Mail Website
Guest Editor
Department of Physics, Faculty of Science, King Khalid University, Riyadh, Saudi Arabia
Interests: nanoscale materials; advanced functional materials; nanomaterials/nanocomposites; optical properties; nonlinear optics; electrical properties; photodetectors; gas sensors/biosensors; solar cells; supercapacitors/batteries; carbon-related materials; graphene-related materials and their composites; thin-film technology
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ali M. Adawi

E-Mail Website
Guest Editor
Gray Centre for Advanced Materials, Department of Physics and Mathematics, Robert Blackburn, Building, University of Hull, Cottingham Road, Hull Hu6 7RX, UK
Interests: organic and inorganic semiconductor nanostructures; nanophotonics and their technological applications; hybrid organic / inorganic two-dimensional photonic crystal nano-cavities; plasmonic and hybrid plasmonic/photonic nanopatch antennas for highly efficient nano-light sources; surface-enhanced Raman scattering (SERS) and the development of plasmonic nano-gaps for single molecule detection; near-zero refractive index metamaterials for directive emission and the spectroscopy of organic and inorganic nanomaterials

Special Issue Information

Dear Colleagues,

Nanoscale materials based on carbon nanotubes (CNTs) and Graphene (G) and their composites possess fascinating physicochemical properties. They are in serious demand due to their wide-scale applications in modern and advanced technological devices, such as electro-optics, photonics, photovoltaics/solar cells, batteries/supercapacitors, nonlinear optics, dielectrics, biomedical/bioengineering, photocatalysis, etc. A vast number of nanoscale materials developed in the past few decades and were used to develop high-performance devices at the nanoscale.

Hence, we have designed a Special Issue on the “Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G-Related Materials for future devices,” which is open for researchers and scientists from all around the globe to share their contributions related to various materials, such as nanoparticles/nanosheets/nanostructured films, coatings/gas/biosensing/energies/solar cells/nonlinear optics/biomedical/bioengineering/photocatalysis, etc., based on CNT/G and related materials. This Special Issue covers broad research subjects related to nanoscale materials in general, such as nanocomposites, nanostructured, nanofilms, etc., grown or simulated through basic and newly developed/innovative methods for advanced or revolutionary applications.  

In this Special Issue on the “Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G-Related Materials for future devices,” the focus is on the broad area of research for new development in the synthesis/fabrication, simulation, characterization, and applications of nanoscale materials.

Thus, we would like to invite researchers, scientists, and engineers alike who are actively working on CNT/G and related nanoscale materials/nanocomposites to contribute their unpublished results in the form of high-quality original articles/communications/letters and reviews that show recent experimental/computational studies on nanostructured materials based on CNT/G for modern applications.

The current Special Issue will cover topics including but not limited to the subsequent features of the “Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G-Related Materials for future devices.”

  • Synthesis on nanostructured materials;
  • Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties;
  • Carbon and carbon-related materials and composites;
  • New/modified or advanced techniques for characterizing nanoscale materials;
  • Optoelectronic applications;
  • Applications in Biomedical/bioengineering related devices;
  • Biosensing/photo-sensing/Sensing applications;
  • Functionalization of nanoscale materials;
  • Computational modeling and calculation;
  • Solar cells and alternative energies applications;
  • Supercapacitors/Batteries;
  • Photocatalysis uses of nanoscale materials. 

Prof. Dr. Salem A. AlFaify
Prof. Dr. Mohd Shkir
Prof. Dr. Ali M. Adawi
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

  • CNT
  • G
  • optoelectronics
  • nanocomposites
  • computational
  • surface alteration
  • biomedicals/bioengineering
  • flexible optoelectronics/sensors
  • nonlinear optics
  • development of new/modified techniques
  • supercapacitors
  • solar cells and alternative energies
  • photocatalysis
  • carbon-related materials and their composites

Published Papers (5 papers)

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Research

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16 pages, 24914 KiB  
Article
Hydrogen Bond Dynamics and Phase Transitions of Water inside Carbon Nanotubes
by Amit Srivastava, Jamal Hassan and Dirar Homouz
Nanomaterials 2023, 13(2), 284; https://doi.org/10.3390/nano13020284 - 10 Jan 2023
Cited by 2 | Viewed by 1536
Abstract
Water dynamics in nanochannels are altered by confinement, particularly in small carbon nanotubes (CNTs). However, the mechanisms behind these effects remain unclear. To address these issues, we carried out extensive molecular dynamics (MD) simulations to investigate the structure and dynamics of water inside [...] Read more.
Water dynamics in nanochannels are altered by confinement, particularly in small carbon nanotubes (CNTs). However, the mechanisms behind these effects remain unclear. To address these issues, we carried out extensive molecular dynamics (MD) simulations to investigate the structure and dynamics of water inside CNTs of different sizes (length of 20 nm and diameters vary from 0.8 nm to 5.0 nm) at different temperatures (from 200 K to 420 K). The radial density profile of water inside CNTs shows a single peak near the CNT walls for small nanotubes. For CNTs with larger sizes, water molecules are arranged into coaxial tubular sheets, the number of which increases with the CNT size. Subdiffusive behavior is observed for ultranarrow CNTs with diameters of 0.8 nm and 1 nm. As the size of CNTs increases, Fickian diffusion becomes evident. The hydrogen bond correlation function of water inside CNT decays slower than in bulk water, and the decay rate decreases as we increase the diameter of the CNTs. In large CNTs, the hydrogen bond lifetime of the innermost layer is shorter than the other layers and depends on temperature. Additional analysis of our results reveals that water molecules along the CNT axis show a non-Arrhenius to Arrhenius diffusion crossover. In general, the diffusion transition temperature is higher than that of bulk water, but it depends on the size of the CNT. Full article
(This article belongs to the Special Issue Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related Materials for Future Devices)
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12 pages, 7521 KiB  
Article
Strengthening and Toughening CNTs/Mg Composites by OpTimizing the Grinding Time of Magnesium Powder
by Yunpeng Ding, Yizhuang Zhang, Zhiyuan Li, Changhong Liu, Hanying Wang, Xin Zhao, Xinfang Zhang, Jilei Xu and Xiaoqin Guo
Nanomaterials 2022, 12(23), 4277; https://doi.org/10.3390/nano12234277 - 1 Dec 2022
Cited by 2 | Viewed by 1089
Abstract
In this paper, CNT/Mg composites with high compressive properties were prepared by using Ni-plated CNT and pure magnesium powder as raw materials through the grinding of magnesium powder, ball-milling mixing and hot-pressing sintering. The effect of grinding time for finer magnesium powder on [...] Read more.
In this paper, CNT/Mg composites with high compressive properties were prepared by using Ni-plated CNT and pure magnesium powder as raw materials through the grinding of magnesium powder, ball-milling mixing and hot-pressing sintering. The effect of grinding time for finer magnesium powder on the microstructure and properties of the final composites was studied mainly by SEM, XRD, HRTEM and compression tests. The results show that with the prolongation of milling time, the magnesium particle size decreases gradually and the CNT dispersion becomes more uniform. Moreover, the nickel layer on the surface of CNT reacts with highly active broken magnesium powder in the sintering process to generate MgNi2 intermediate alloy, which significantly improves interface bonding. The strength and fracture strain of composites are significantly increased by the combined action of the uniform distribution of CNTs and strong interface bonding from the MgNi2 phase. The compressive strength, yield strength and fracture strain of the composites, prepared with a 60 h grinding of magnesium powder, reached 268%, 272% and 279% of those in composites without the grinding of magnesium powder. Full article
(This article belongs to the Special Issue Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related Materials for Future Devices)
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15 pages, 3955 KiB  
Article
Enhanced Room Temperature Ammonia Gas Sensing Properties of Fe-Doped MoO3 Thin Films Fabricated Using Nebulizer Spray Pyrolysis
by Fatemah H. Alkallas, Amira Ben Gouider Trabelsi, Mohd Shkir and Salem AlFaify
Nanomaterials 2022, 12(16), 2797; https://doi.org/10.3390/nano12162797 - 15 Aug 2022
Cited by 9 | Viewed by 1459
Abstract
MoO3 thin films are fabricated using nebulizer spray pyrolysis technique, which is doped with Fe at various concentrations of 1, 2, 3, and 4% for ammonia gas sensors application at room temperature. X-ray diffraction (XRD) study confirms the growth of the crystal [...] Read more.
MoO3 thin films are fabricated using nebulizer spray pyrolysis technique, which is doped with Fe at various concentrations of 1, 2, 3, and 4% for ammonia gas sensors application at room temperature. X-ray diffraction (XRD) study confirms the growth of the crystal by Fe doping up to 3%, nano rods shape morphology of the thin film samples observed by field emission scanning electron microscope (FESEM), reduction in bandgap is evidenced via UV-VIS spectrophotometer. Gas sensing study is performed using gas analyzing chamber attached with Keithley source meter. Since 3% Fe doped MoO3 sample displayed nano rods over the film surface which exhibits highest sensitivity of 38,500%, in a short period of raise and decay time 54 and 6 s. Our findings confirms that the 3% Fe doped MoO3 films suitability for ammonia gas sensing application. Full article
(This article belongs to the Special Issue Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related Materials for Future Devices)
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9 pages, 1204 KiB  
Article
Nonlinear Vibration of a Pre-Stressed Water-Filled Single-Walled Carbon Nanotube Using Shell Model
by Mahmoud Mohamed Selim and Awad Musa
Nanomaterials 2020, 10(5), 974; https://doi.org/10.3390/nano10050974 - 18 May 2020
Cited by 2 | Viewed by 1864
Abstract
This paper is an attempt to study the nonlinear vibration of a pre-stressed single-walled carbon nanotube (SWCNT) with water-filled and simply supported ends. A new analytical formula is obtained for the nonlinear model based on the simplified Donnell’s shell theory. The effects of [...] Read more.
This paper is an attempt to study the nonlinear vibration of a pre-stressed single-walled carbon nanotube (SWCNT) with water-filled and simply supported ends. A new analytical formula is obtained for the nonlinear model based on the simplified Donnell’s shell theory. The effects of internal fluid on the coupling vibration of the SWCNT–water system are discussed in detail. Furthermore, the influence of the different nanotube thicknesses and radiuses on the nonlinear vibration frequencies is investigated according to the shell theory. Numerical calculations are done to show the effectiveness of the proposed schemes. The results show that the nonlinear frequency grew with the increasing nonlinear parameters (radius and thickness of nanotube). In addition, it is shown that the influence of the nonlinear parameters is greater at the lower mode in comparison with the higher mode for the same nanotube thickness and radius. Full article
(This article belongs to the Special Issue Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related Materials for Future Devices)
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Review

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19 pages, 3980 KiB  
Review
A Brief Review of Transparent Conducting Oxides (TCO): The Influence of Different Deposition Techniques on the Efficiency of Solar Cells
by Ganesh T. Chavan, Youngkuk Kim, Muhammad Quddamah Khokhar, Shahzada Qamar Hussain, Eun-Chel Cho, Junsin Yi, Zubair Ahmad, Pitcheri Rosaiah and Chan-Wook Jeon
Nanomaterials 2023, 13(7), 1226; https://doi.org/10.3390/nano13071226 - 30 Mar 2023
Cited by 21 | Viewed by 6163
Abstract
Global-warming-induced climate changes and socioeconomic issues increasingly stimulate reviews of renewable energy. Among energy-generation devices, solar cells are often considered as renewable sources of energy. Lately, transparent conducting oxides (TCOs) are playing a significant role as back/front contact electrodes in silicon heterojunction solar [...] Read more.
Global-warming-induced climate changes and socioeconomic issues increasingly stimulate reviews of renewable energy. Among energy-generation devices, solar cells are often considered as renewable sources of energy. Lately, transparent conducting oxides (TCOs) are playing a significant role as back/front contact electrodes in silicon heterojunction solar cells (SHJ SCs). In particular, the optimized Sn-doped In2O3 (ITO) has served as a capable TCO material to improve the efficiency of SHJ SCs, due to excellent physicochemical properties such as high transmittance, electrical conductivity, mobility, bandgap, and a low refractive index. The doped-ITO thin films had promising characteristics and helped in promoting the efficiency of SHJ SCs. Further, SHJ technology, together with an interdigitated back contact structure, achieved an outstanding efficiency of 26.7%. The present article discusses the deposition of TCO films by various techniques, parameters affecting TCO properties, characteristics of doped and undoped TCO materials, and their influence on SHJ SC efficiency, based on a review of ongoing research and development activities. Full article
(This article belongs to the Special Issue Study of Chemo-Physical, Opto-Electronic, and Mechanic-Electronic Properties of CNT/G Related Materials for Future Devices)
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