Twin T-graphene: a new semiconducting 2D carbon allotrope

2020 ◽  
Vol 22 (18) ◽  
pp. 10286-10294 ◽  
Author(s):  
Debaprem Bhattacharya ◽  
Debnarayan Jana
Keyword(s):  
Two Dimensional ◽  
Carbon Allotrope ◽  
Carbon Allotropes ◽  
Significant Interest

Two dimensional carbon allotropes with multiple atomic layers have attracted significant interest recently.

A new two-dimensional all-sp3 carbon allotrope with indirect band gap and superior carrier mobility

2021 ◽  
Author(s):  
Xing Yang ◽  
Yuwei Wang ◽  
Ruining Xiao ◽  
Tao Wen ◽  
Yulin Shen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Band Gap ◽  
Carrier Mobility ◽  
Two Dimensional ◽  
Carbon Allotrope ◽  
Carbon Allotropes ◽  
Indirect Band Gap

The success of fascinating graphene has motivated much interest in exploiting new two-dimensional (2D) carbon allotropes with excellent electronic and mechanical properties such as graphdiyne and penta-graphene. However, there is...

Two-dimensional metallic carbon allotrope with multiple rings for ion batteries

2021 ◽  
Author(s):  
Zishuang Cheng ◽  
Xiaoming Zhang ◽  
Hui Zhang ◽  
Jianbo Gao ◽  
Heyan Liu ◽  
...  
Keyword(s):  
Storage Capacity ◽  
Diffusion Rate ◽  
Two Dimensional ◽  
Carbon Allotrope ◽  
Carbon Allotropes ◽  
Multiple Rings

Two-dimensional (2-D) materials, especially carbon allotropes, have larger storage capacity and faster diffusion rate due to their unique structures and are usually used in ion batteries. Recently, a new stable...

Two dimensional Dirac carbon allotropes from graphene

Nanoscale ◽  
2014 ◽  
Vol 6 (2) ◽  
pp. 1113-1118 ◽  
Author(s):  
Li-Chun Xu ◽  
Ru-Zhi Wang ◽  
Mao-Sheng Miao ◽  
Xiao-Lin Wei ◽  
Yuan-Ping Chen ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Carbon Allotropes

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

scholarly journals Chirality in curved polyaromatic systems

2017 ◽  
Vol 46 (6) ◽  
pp. 1643-1660 ◽  
Author(s):  
Michel Rickhaus ◽  
Marcel Mayor ◽  
Michal Juríček
Keyword(s):  
Gaussian Curvature ◽  
Carbon Allotrope ◽  
Carbon Allotropes ◽  
Negative Gaussian Curvature ◽  
Helical Chirality

Chiral non-planar polyaromatic systems that display zero, positive or negative Gaussian curvature are analysed and their potential to ‘encode’ chirality of larger sp2-carbon allotropes is evaluated. Shown is a hypothetical peanut-shaped carbon allotrope, where helical chirality results from the interplay of various curvature types.

scholarly journals Nanoribbons with Non-Alternant Topology from Fusion of Polyazulene: Carbon Allotropes Beyond Graphene

2019 ◽  
Author(s):  
Qitang Fan ◽  
Daniel Martin-Jimenez ◽  
Daniel Ebeling ◽  
Claudio K. Krug ◽  
Lea Brechmann ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Low Temperature ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Scanning Probe ◽  
Two Dimensional ◽  
Reaction Step ◽  
Functional Theory ◽  
Carbon Allotropes ◽  
Temperature Scanning

Various two-dimensional (2D) carbon allotropes with non-alternant topologies, such as pentaheptites and phagraphene, have been proposed. Predictions indicate that these metastable carbon polymorphs, which contain odd-numbered rings, possess unusual (opto)electronic properties. However, none of these materials has been achieved experimentally due to synthetic challenges. In this work, by using on-surface synthesis, nanoribbons of the non-alternant graphene allotropes, phagraphene and tetra-penta-hepta(TPH)-graphene have been obtained by dehydrogenative C-C coupling of 2,6-polyazulene chains. These chains were formed in a preceding reaction step via on-surface Ullmann coupling of 2,6-dibromoazulene. Low-temperature scanning probe microscopies with CO-functionalized tip and density functional theory calculations have been used to elucidate their structural properties. <br>

scholarly journals Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2046 ◽  
Author(s):  
Stephanie Hui Kit Yap ◽  
Kok Ken Chan ◽  
Swee Chuan Tjin ◽  
Ken-Tye Yong
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
High Sensitivity ◽  
Optical Fiber Sensors ◽  
Functional Coating ◽  
Fiber Sensors ◽  
Carbon Allotrope ◽  
Carbon Allotropes ◽  
Sensing Technology ◽  
Wide Range

Recently, carbon allotropes have received tremendous research interest and paved a new avenue for optical fiber sensing technology. Carbon allotropes exhibit unique sensing properties such as large surface to volume ratios, biocompatibility, and they can serve as molecule enrichers. Meanwhile, optical fibers possess a high degree of surface modification versatility that enables the incorporation of carbon allotropes as the functional coating for a wide range of detection tasks. Moreover, the combination of carbon allotropes and optical fibers also yields high sensitivity and specificity to monitor target molecules in the vicinity of the nanocoating surface. In this review, the development of carbon allotropes-based optical fiber sensors is studied. The first section provides an overview of four different types of carbon allotropes, including carbon nanotubes, carbon dots, graphene, and nanodiamonds. The second section discusses the synthesis approaches used to prepare these carbon allotropes, followed by some deposition techniques to functionalize the surface of the optical fiber, and the associated sensing mechanisms. Numerous applications that have benefitted from carbon allotrope-based optical fiber sensors such as temperature, strain, volatile organic compounds and biosensing applications are reviewed and summarized. Finally, a concluding section highlighting the technological deficiencies, challenges, and suggestions to overcome them is presented.

Theoretical prediction of a new two-dimensional carbon allotrope and NDR behaviour of its one-dimensional derivatives

2013 ◽  
Vol 15 (48) ◽  
pp. 21001 ◽  
Author(s):  
Bikash Mandal ◽  
Sunandan Sarkar ◽  
Anup Pramanik ◽  
Pranab Sarkar
Keyword(s):  
Theoretical Prediction ◽  
Two Dimensional ◽  
Carbon Allotrope ◽  
One Dimensional

Pentagraphyne: a new carbon allotrope with superior electronic and optical property

2020 ◽  
Vol 8 (45) ◽  
pp. 16143-16150
Author(s):  
Jyotirmoy Deb ◽  
Debolina Paul ◽  
Utpal Sarkar
Keyword(s):  
Optical Property ◽  
Two Dimensional ◽  
Carbon Allotrope

Herein, we have proposed a novel two-dimensional (2D) carbon allotrope, namely pentagraphyne (PG-yne), which is energetically favourable than other graphyne members, including experimentally synthesized graphyne and graphdiyne monolayer.

scholarly journals Vibration behavior of diamondene nano-ribbon passivated by hydrogen

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Lei Wang ◽  
Ranran Zhang ◽  
Jiao Shi ◽  
Kun Cai
Keyword(s):  
Molecular Dynamics ◽  
Slenderness Ratio ◽  
Curvature Radius ◽  
Two Dimensional ◽  
Vibration Frequencies ◽  
Carbon Allotrope ◽  
First Order ◽  
Vibration Behavior ◽  
Temperature Controlled ◽  
Dynamics Simulations

Abstract Diamondene is a new kind of two dimensional carbon allotrope with excellent properties and passivation approaches are often used to reduce the extremely high pressure required during its fabrication. When a one-end-clamped diamondene ribbon is hydrogenated on one surface, the ribbon tends to bend and vibrate due to asymmetric layout of C-H bonds on two surfaces. In the present work, the vibration behavior, including natural curvatures and vibration frequencies of diamondene ribbons, were investigated by molecular dynamics simulations. Results indicate that the natural curvature radius of a narrow diamondene ribbon is close to 12.17 nm at a temperature below 150 K, which is essential for fabricating an arc nanodevice. The first order frequency (f1) of a cantilever beam made from the ribbon follows traditional beam vibration theory if the slenderness ratio is low. In particular, f1 increases logarithmically at temperature below 50 K, but changes slightly between 50 K and 150 K. It suggests a design scheme for a nanoresonator with temperature-controlled frequency.

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