scholarly journals A Nonzero Gap Two-dimensional Carbon Allotrope from Porous Graphene

2012 ◽  
Vol 1407 ◽  
Author(s):  
Gustavo Brunetto ◽  
Bruno I. Santos ◽  
Pedro A. S. Autreto ◽  
Leonadro D. Machado ◽  
Ricardo P. B. dos Santos ◽  
...  
Keyword(s):  
Materials Science ◽  
Quantum Molecular Dynamics ◽  
Two Dimensional ◽  
Frontier Orbitals ◽  
Carbon Allotrope ◽  
Porous Graphene ◽  
Spontaneous Formation ◽  
Hydrogenated Graphene ◽  
Molecular Dynamics Calculations ◽  
Synthetic Routes

ABSTRACTGraphene has been one of the hottest topics in materials science in the last years. Because of its special electronic properties graphene is considered one of the most promising materials for future electronics. However, in its pristine form graphene is a gapless semiconductor, which poses some limitations to its use in some transistor electronics. Many approaches have been tried to create, in a controlled way, a gap in graphene. These approaches have obtained limited successes. Recently, hydrogenated graphene-like structures, the so-called porous graphene, have been synthesized. In this work we show, based on ab initio quantum molecular dynamics calculations, that porous graphene dehydrogenation can lead to a spontaneous formation of a nonzero gap two-dimensional carbon allotrope, called biphenylene carbon (BC). Besides exhibiting an intrinsic nonzero gap value, BC also presents well delocalized frontier orbitals, suggestive of a structure with high electronic mobility. Possible synthetic routes to obtain BC from porous graphene are addressed.

scholarly journals Nonzero Gap Two-Dimensional Carbon Allotrope from Porous Graphene

2012 ◽  
Vol 116 (23) ◽  
pp. 12810-12813 ◽  
Author(s):  
G. Brunetto ◽  
P. A. S. Autreto ◽  
L. D. Machado ◽  
B. I. Santos ◽  
R. P. B. dos Santos ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Carbon Allotrope ◽  
Porous Graphene

Theoretical Study of Carrier Mobility in Two-Dimensional Tetragonal Carbon Allotrope from Porous Graphene

2016 ◽  
Vol 33 (8) ◽  
pp. 083101 ◽  
Author(s):  
Song Gao ◽  
Hui Xiang ◽  
Bo Xu ◽  
Yi-Dong Xia ◽  
Jiang Yin ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Theoretical Study ◽  
Two Dimensional ◽  
Carbon Allotrope ◽  
Porous Graphene

scholarly journals PAI-graphene: A new topological semimetallic two-dimensional carbon allotrope with highly tunable anisotropic Dirac cones

Carbon ◽  
2020 ◽  
Vol 170 ◽  
pp. 477-486 ◽  
Author(s):  
Xin Chen ◽  
Adrien Bouhon ◽  
Linyang Li ◽  
François M. Peeters ◽  
Biplab Sanyal
Keyword(s):  
Two Dimensional ◽  
Carbon Allotrope

Conformation of deltorphin-II in membrane environment studied by two-dimensional NMR spectroscopy and molecular dynamics calculations

1993 ◽  
Vol 212 (1) ◽  
pp. 185-191 ◽  
Author(s):  
Yasunori OHNO ◽  
Motozumi SEGAWA ◽  
Hirofumi OHISHI ◽  
Mitsunobu DOI ◽  
Kunihiro KITAMURA ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Nmr Spectroscopy ◽  
Two Dimensional ◽  
Molecular Dynamics Calculations ◽  
Deltorphin Ii

scholarly journals Two-dimensional based hybrid materials for photocatalytic conversion of carbon dioxide into hydrocarbon fuels: A mini review

2021 ◽  
Vol 22 (1) ◽  
pp. 132-140
Author(s):  
Kannan Karthik ◽  
Devi Radhika ◽  
D. Gnanasangeetha ◽  
K. Gurushankar ◽  
Md Enamul Hoque
Keyword(s):  
Carbon Dioxide ◽  
Metal Oxide ◽  
Hybrid Materials ◽  
Environmental Sustainability ◽  
Materials Science ◽  
Two Dimensional ◽  
Carbon Dioxide Conversion ◽  
Two Dimensional Materials ◽  
The Impact ◽  
Material Composite

Carbon dioxide conversion to chemicals and fuels based on two-dimensional based hybrid materials will present a thorough discussion of the physics, chemistry, and electrochemical science behind the new and important area of materials science, energy, and environmental sustainability. The tremendous opportunities for two-dimensional based hybrid materials in the photocatalytic carbon dioxide conversion field come up from their huge number of applications. In the carbon dioxide conversion field, nanostructured metal oxide with a two-dimensional material composite system must meet assured design and functional criteria, as well as electrical and mechanical properties. The whole content of the proposed review is anticipated to build on what has been learned in elementary courses about synthesizing two-dimensional nanomaterials, metal oxide with composites, carbon dioxide conversion requirements, uses of two-dimensional materials with nanocomposites in carbon dioxide conversion as well as fuels and the major mechanisms involved during each application. The impact of hybrid materials and synergistic composite mixtures which are used extensively or show promising outcomes in the photocatalytic carbon dioxide conversion field will also be discussed.

Scalable printing of two-dimensional single crystals of organic semiconductors towards high-end device applications

2021 ◽  
Author(s):  
Shohei Kumagai ◽  
Tatsuyuki Makita ◽  
Shun Watanabe ◽  
Jun Takeya
Keyword(s):  
Single Crystals ◽  
Organic Semiconductors ◽  
Materials Science ◽  
Printed Electronics ◽  
Human Society ◽  
Two Dimensional ◽  
Organic Thin Film ◽  
Device Applications ◽  
High Carrier Mobility ◽  
High Carrier

Abstract The past several decades have witnessed a vast array of developments in printable organic semiconductors, where successes both in synthetic chemistry and in printing technology constituted a key step forward to realization of printed electronics. In this review, we highlight specifically on materials science, charge transport, and device engineering of —two-dimensional single crystals—. Defect-free organic single-crystalline wafers manufactured via a one-shot printing process allows remarkably reliable implementations of organic thin-film transistors with decently high carrier mobility up to 10 cm2 V-1 s-1, which has revolutionized the current printing electronics to be able to meet looming IoT challenges. This review focuses on the perspective of printing two-dimensional single crystals with reasonable areal coverage, showing their promising applications for practical devices and future human society, particularly based on our recent contributions.

2. Close inspection

2014 ◽  
pp. 22-42
Author(s):  
Christopher Hall
Keyword(s):  
Internal Structure ◽  
Materials Science ◽  
Two Dimensional ◽  
Material Behaviour ◽  
X Ray Diffraction ◽  
Close Inspection ◽  
Robert Hooke ◽  
3 Dimensional ◽  
The Core ◽  
Electron Microscopes

‘Close inspection’ explains that at the core of materials science is the understanding of the internal structure of materials. If we don’t understand the internal structure we shall struggle to explain or to predict material behaviour. If we want to alter the behaviour to make better materials, we probably need to re-engineer the architecture inside. This understanding has been made possible with the development of microscopy, beginning in the 17th century with Robert Hooke and Anton van Leeuwenhoek. Development of X-ray diffraction and electron microscopes has provided atomic resolution leading to improved crystallography and lattice theories for 3-dimensional crystals. Two-dimensional crystals such as graphene and 1-dimensional carbon nanotubes are also described.

scholarly journals Two-Dimensional Materials in Large-Areas: Synthesis, Properties and Applications

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Ali Zavabeti ◽  
Azmira Jannat ◽  
Li Zhong ◽  
Azhar Ali Haidry ◽  
Zhengjun Yao ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Large Area ◽  
Large Crystal ◽  
High Quality ◽  
Future Technology ◽  
Advantages And Disadvantages ◽  
Grain Sizes ◽  
Two Dimensional Materials ◽  
Synthesis Properties ◽  
Synthetic Routes

AbstractLarge-area and high-quality two-dimensional crystals are the basis for the development of the next-generation electronic and optical devices. The synthesis of two-dimensional materials in wafer scales is the first critical step for future technology uptake by the industries; however, currently presented as a significant challenge. Substantial efforts have been devoted to producing atomically thin two-dimensional materials with large lateral dimensions, controllable and uniform thicknesses, large crystal domains and minimum defects. In this review, recent advances in synthetic routes to obtain high-quality two-dimensional crystals with lateral sizes exceeding a hundred micrometres are outlined. Applications of the achieved large-area two-dimensional crystals in electronics and optoelectronics are summarised, and advantages and disadvantages of each approach considering ease of the synthesis, defects, grain sizes and uniformity are discussed.

scholarly journals Electronic properties and applications of MXenes: a theoretical review

2017 ◽  
Vol 5 (10) ◽  
pp. 2488-2503 ◽  
Author(s):  
Mohammad Khazaei ◽  
Ahmad Ranjbar ◽  
Masao Arai ◽  
Taizo Sasaki ◽  
Seiji Yunoki
Keyword(s):  
Transition Metal ◽  
Electronic Properties ◽  
Materials Science ◽  
Science And Technology ◽  
Max Phase ◽  
Two Dimensional ◽  
Metal Carbides ◽  
Transition Metal Carbides ◽  
Chemical Exfoliation

The recent chemical exfoliation of layered MAX phase compounds to novel two-dimensional transition metal carbides and nitrides, the so-called MXenes, has brought a new opportunity to materials science and technology.

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