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Nanomaterials
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Nanofabrication and Nanomanipulation in Graphene
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Nanofabrication and Nanomanipulation in Graphene

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

Deadline for manuscript submissions: closed (15 August 2023) | Viewed by 3929

Special Issue Editor

Prof. Dr. Oleksandr Ivasenko

E-Mail Website
Guest Editor
Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou 215123, China
Interests: nanofabrication; advanced functional materials; self-assembly; additive manufacturing; device prototyping

Special Issue Information

Dear Colleagues,

The nanofabrication and manipulation of matter at the nanoscale are at the core of all modern technological advances. Both top-down and bottom-up approaches are actively being developed to gain unprecedented dimensional accuracy and design variability. When the full potential is realized, one can expect to reach not only morphological control, but also the molecular or even atomic-level tuning of nanostructured chemical compositions. In this regard, graphene represents an ideal testbed due to its diverse chemical functionalization, outstanding performance, and industrial potential.

This Special Issue plans to present a cross-section through current research regarding nanofabrication and nanomanipulation in graphene, welcoming articles in the format of full papers, communications, and reviews. Potential topics include, but are not limited to:

  • Nanofabrication and nanopatterning of graphene-based materials;
  • Nanostructured chemical functionalization of graphene surfaces (covalent or supramolecular);
  • Preparation of graphene heterostructures;
  • Nanomanipulation of graphene sheets and flakes;
  • Fabrication and testing of graphene-based micro-/nano electromechanical systems (MEMS and NEMS);
  • Graphene-based metasurfaces.

Prof. Dr. Oleksandr Ivasenko
Guest Editor

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

  • graphene
  • nanofabrication
  • nanomanipulation
  • nanopatterning
  • graphene-based heterostructures
  • graphene-based metasurfaces
  • graphene-based MEMS and NEMS

Published Papers (3 papers)

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Research

18 pages, 6796 KiB  
Article
Remarkable Thermal Performance Enhancement of Micro Heat Pipes with Graphene-Nanoplatelet Nano-Wicks
by Jie Sheng Gan and Yew Mun Hung
Nanomaterials 2023, 13(2), 232; https://doi.org/10.3390/nano13020232 - 04 Jan 2023
Cited by 2 | Viewed by 1605
Abstract
The ultrafast water permeation property of graphene nanoplatelets (GNPs) synergically enhances the evaporation and water circulation processes in a micro heat pipe (MHP). An MHP is a promising phase-change heat-transfer device capable of transferring large amounts of heat energy efficiently. The hydrophobic, atomically [...] Read more.
The ultrafast water permeation property of graphene nanoplatelets (GNPs) synergically enhances the evaporation and water circulation processes in a micro heat pipe (MHP). An MHP is a promising phase-change heat-transfer device capable of transferring large amounts of heat energy efficiently. The hydrophobic, atomically smooth carbon walls of GNPs nanostructures provide a network of nanocapillaries that allows water molecules to intercalate frictionlessly among the graphene layers. Together with the attraction force of the oxygenated functional groups, a series of hydrophobic and hydrophilic surfaces are formed that significantly improve the water circulation rate. The intercalation of water molecules encourages the formation of water-thin film for film-wise evaporation. The effect of nano-wick thickness on the thermal performance of the MHP is investigated. A thinner GNP nano-wick is more favorable to film-wise evaporation while a thicker nano-wick promotes a higher water circulation rate from the condenser to the evaporator, leading to the existence of an optimal thickness. By benchmarking with the uncoated MHP, the thermal conductance of an MHP with a 46.9-µm GNP nano-wick manifests a maximum enhancement of 128%. This study provides insights on the feasible implementation of GNP nano-wicks into a highly efficient micro-scale electronics cooling device for environmental sustainability. Full article
(This article belongs to the Special Issue Nanofabrication and Nanomanipulation in Graphene)
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12 pages, 2198 KiB  
Article
Graphene Nanoflake- and Carbon Nanotube-Supported Iron–Potassium 3D-Catalysts for Hydrocarbon Synthesis from Syngas
by Sergei A. Chernyak, Dmitrii N. Stolbov, Konstantin I. Maslakov, Ruslan V. Kazantsev, Oleg L. Eliseev, Dmitry O. Moskovskikh and Serguei V. Savilov
Nanomaterials 2022, 12(24), 4491; https://doi.org/10.3390/nano12244491 - 19 Dec 2022
Cited by 1 | Viewed by 1223
Abstract
Transformation of carbon oxides into valuable feedstocks is an important challenge nowadays. Carbon oxide hydrogenation to hydrocarbons over iron-based catalysts is one of the possible ways for this transformation to occur. Carbon supports effectively increase the dispersion of such catalysts but possess a [...] Read more.
Transformation of carbon oxides into valuable feedstocks is an important challenge nowadays. Carbon oxide hydrogenation to hydrocarbons over iron-based catalysts is one of the possible ways for this transformation to occur. Carbon supports effectively increase the dispersion of such catalysts but possess a very low bulk density, and their powders can be toxic. In this study, spark plasma sintering was used to synthesize new bulk and dense potassium promoted iron-based catalysts, supported on N-doped carbon nanomaterials, for hydrocarbon synthesis from syngas. The sintered catalysts showed high activity of up to 223 μmolCO/gFe/s at 300–340 °C and a selectivity to C5+ fraction of ~70% with a high portion of olefins. The promising catalyst performance was ascribed to the high dispersity of iron carbide particles, potassium promotion of iron carbide formation and stabilization of the active sites with nitrogen-based functionalities. As a result, a bulk N-doped carbon-supported iron catalyst with 3D structure was prepared, for the first time, by a fast method, and demonstrated high activity and selectivity in hydrocarbon synthesis. The proposed technique can be used to produce well-shaped carbon-supported catalysts for syngas conversion. Full article
(This article belongs to the Special Issue Nanofabrication and Nanomanipulation in Graphene)
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14 pages, 4899 KiB  
Article
Electrical Contact Resistance of Large-Area Graphene on Pre-Patterned Cu and Au Electrodes
by Tomáš Blecha, Zuzana Vlčková Živcová, Farjana J. Sonia, Martin Mergl, Oleksandr Volochanskyi, Michal Bodnár, Pavel Rous, Kenichiro Mizohata, Martin Kalbáč and Otakar Frank
Nanomaterials 2022, 12(24), 4444; https://doi.org/10.3390/nano12244444 - 14 Dec 2022
Cited by 2 | Viewed by 2440
Abstract
Contact resistance between electrically connected parts of electronic elements can negatively affect their resulting properties and parameters. The contact resistance is influenced by the physicochemical properties of the connected elements and, in most cases, the lowest possible value is required. The issue of [...] Read more.
Contact resistance between electrically connected parts of electronic elements can negatively affect their resulting properties and parameters. The contact resistance is influenced by the physicochemical properties of the connected elements and, in most cases, the lowest possible value is required. The issue of contact resistance is also addressed in connection with the increasingly frequently used carbon allotropes. This work aimed to determine the factors that influence contact resistance between graphene prepared by chemical vapour deposition and pre-patterned Cu and Au electrodes onto which graphene is subsequently transferred. It was found that electrode surface treatment methods affect the resistance between Cu and graphene, where contact resistance varied greatly, with an average of 1.25 ± 1.54 kΩ, whereas for the Au electrodes, the deposition techniques did not influence the resulting contact resistance, which decreased by almost two orders of magnitude compared with the Cu electrodes, to 0.03 ± 0.01 kΩ. Full article
(This article belongs to the Special Issue Nanofabrication and Nanomanipulation in Graphene)
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