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Micromachines
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Flexible and Printable Graphene Electronics
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Flexible and Printable Graphene Electronics

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D1: Semiconductor Devices".

Deadline for manuscript submissions: closed (15 December 2020) | Viewed by 10077

Special Issue Editor

Prof. Dr. Suprem R. Das

E-Mail Website
Guest Editor
Department of Industrial and Manufacturing Systems Engineering, Department of Electrical and Computer Engineering, Carl R. Ice College of Engineering,Kansas State University, 2061 Rathbone Hall, 1701B Platt St., Manhattan, KS 66506, USA
Interests: nanoelectronics; carbon nanomaterials; printed electronics; sensors; energy

Special Issue Information

Dear Colleagues,

Since its discovery in 2004, graphene has revolutionized the field of nanoscience and nanotechnology, and it further continues to do so. Graphene brought the first fundamental concept of linear band structure in solids that is the key to almost all of its glories. The subsequent discovery of the chemical vapor deposition of graphene was the first in its large-scale manufacturing that opened up the scalability of this material and its associated devices. Following the last fifteen years of graphene research, which has been more focused on fundamental science, there is now a growing interest in graphene’s real applications and industrial manufacturing. Several challenges are likely to be surmounted in the coming years if this is the material of choice, such as silicon. In this context, flexible and printed graphene electronics or flexible printed graphene technology, in general, has been the focus of great interest in manufacturing devices, such as various sensors, energy storage devices (such as batteries and supercapacitors), and transparent conductors. The list is expected to expand to several other applications. Additionally, printed graphene coating with surface nanostructuring, such as exploiting laser/photonic-based micromachining, has brought significant further innovations, such as creating superhydrophobic surfaces and multifunctional coatings.

In view of these emerging developments, we invite authors to contribute high-quality original papers and review articles, thereby bringing new understanding and developments in the growing field of flexible printed graphene electronics and their associated technologies.

Prof. Dr. Suprem R. Das
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. Micromachines is an international peer-reviewed open access monthly 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 2600 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

  • inkjet-printed graphene
  • 3D-printed graphene
  • screen-printed graphene
  • sensors
  • energy harvesters
  • transparent conductors
  • biosensors
  • laser micromachining
  • hydrophobic and superhydrophobic surfaces

Published Papers (2 papers)

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Research

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14 pages, 4095 KiB  
Article
Comparison of Laser-Synthetized Nanographene-Based Electrodes for Flexible Supercapacitors
by Francisco J. Romero, Denice Gerardo, Raul Romero, Inmaculada Ortiz-Gomez, Alfonso Salinas-Castillo, Carmen L. Moraila-Martinez, Noel Rodriguez and Diego P. Morales
Micromachines 2020, 11(6), 555; https://0-doi-org.brum.beds.ac.uk/10.3390/mi11060555 - 30 May 2020
Cited by 7 | Viewed by 3581
Abstract
In this paper, we present a comparative study of a cost-effective method for the mass fabrication of electrodes to be used in thin-film flexible supercapacitors. This technique is based on the laser-synthesis of graphene-based nanomaterials, specifically, laser-induced graphene and reduced graphene oxide. The [...] Read more.
In this paper, we present a comparative study of a cost-effective method for the mass fabrication of electrodes to be used in thin-film flexible supercapacitors. This technique is based on the laser-synthesis of graphene-based nanomaterials, specifically, laser-induced graphene and reduced graphene oxide. The synthesis of these materials was performed using two different lasers: a CO2 laser with an infrared wavelength of λ = 10.6 µm and a UV laser (λ = 405 nm). After the optimization of the parameters of both lasers for this purpose, the performance of these materials as bare electrodes for flexible supercapacitors was studied in a comparative way. The experiments showed that the electrodes synthetized with the low-cost UV laser compete well in terms of specific capacitance with those obtained with the CO2 laser, while the best performance is provided by the rGO electrodes fabricated with the CO2 laser. It has also been demonstrated that the degree of reduction achieved with the UV laser for the rGO patterns was not enough to provide a good interaction electrode-electrolyte. Finally, we proved that the specific capacitance achieved with the presented supercapacitors can be improved by modifying the in-planar structure, without compromising their performance, which, together with their compatibility with doping-techniques and surface treatments processes, shows the potential of this technology for the fabrication of future high-performance and inexpensive flexible supercapacitors. Full article
(This article belongs to the Special Issue Flexible and Printable Graphene Electronics)
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Review

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26 pages, 4759 KiB  
Review
Memristive Non-Volatile Memory Based on Graphene Materials
by Zongjie Shen, Chun Zhao, Yanfei Qi, Ivona Z. Mitrovic, Li Yang, Jiacheng Wen, Yanbo Huang, Puzhuo Li and Cezhou Zhao
Micromachines 2020, 11(4), 341; https://0-doi-org.brum.beds.ac.uk/10.3390/mi11040341 - 25 Mar 2020
Cited by 36 | Viewed by 6199
Abstract
Resistive random access memory (RRAM), which is considered as one of the most promising next-generation non-volatile memory (NVM) devices and a representative of memristor technologies, demonstrated great potential in acting as an artificial synapse in the industry of neuromorphic systems and artificial intelligence [...] Read more.
Resistive random access memory (RRAM), which is considered as one of the most promising next-generation non-volatile memory (NVM) devices and a representative of memristor technologies, demonstrated great potential in acting as an artificial synapse in the industry of neuromorphic systems and artificial intelligence (AI), due its advantages such as fast operation speed, low power consumption, and high device density. Graphene and related materials (GRMs), especially graphene oxide (GO), acting as active materials for RRAM devices, are considered as a promising alternative to other materials including metal oxides and perovskite materials. Herein, an overview of GRM-based RRAM devices is provided, with discussion about the properties of GRMs, main operation mechanisms for resistive switching (RS) behavior, figure of merit (FoM) summary, and prospect extension of GRM-based RRAM devices. With excellent physical and chemical advantages like intrinsic Young’s modulus (1.0 TPa), good tensile strength (130 GPa), excellent carrier mobility (2.0 × 105 cm2∙V−1∙s−1), and high thermal (5000 Wm−1∙K−1) and superior electrical conductivity (1.0 × 106 S∙m−1), GRMs can act as electrodes and resistive switching media in RRAM devices. In addition, the GRM-based interface between electrode and dielectric can have an effect on atomic diffusion limitation in dielectric and surface effect suppression. Immense amounts of concrete research indicate that GRMs might play a significant role in promoting the large-scale commercialization possibility of RRAM devices. Full article
(This article belongs to the Special Issue Flexible and Printable Graphene Electronics)
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