Bubble-wrap carbon: an integration of graphene and fullerenes

Nanoscale ◽  
2018 ◽  
Vol 10 (24) ◽  
pp. 11328-11334 ◽  
Author(s):  
Wei Liu ◽  
Jing-yao Liu ◽  
Jing Xia ◽  
Hai-qing Lin ◽  
Mao-sheng Miao
Keyword(s):  
Mechanical Properties ◽  
Two Dimensional ◽  
Carbon Allotropes

Integration of graphene and fullerenes will generate a series of novel two-dimensional carbon allotropes possessing peculiar electronic and mechanical properties.

Failure of Graphdiyne: Structurally Directed Delocalized Crack Propagation

2013 ◽  
Vol 80 (4) ◽  
Author(s):  
Dieter B. Brommer ◽  
Markus J. Buehler
Keyword(s):  
Mechanical Properties ◽  
Crack Propagation ◽  
Failure Mechanisms ◽  
Fracture Analysis ◽  
Two Dimensional ◽  
Main Subject ◽  
Carbon Allotropes ◽  
Original Direction ◽  
Device Applications ◽  
The Many

Among the many potential two-dimensional carbon allotropes inspired by graphene, graphynes have received exceptional attention recently. Graphynes exhibit remarkable mechanical properties depending on their structure. The similar structure and two-dimensional nature of these materials yield many properties that are similar to those of graphene, but the presence of heterogeneous bond types is expected to lead to distinct properties. The main subject of this work is graphdiyne, one of the few graphynes that has been fabricated in large quantities. In this paper, we perform fracture analysis on graphdiyne and find a delocalized failure mechanism in which a crack propagates along a diagonal with respect its original direction. The covalence of the material allows for this simple but intriguing phenomenon to be investigated. Graphene is also tested to compare the behavior. This mechanism has implications for the toughness and robustness of this material, which is topical for many device applications recently proposed in the literature. Further, connections of such delocalized failure mechanisms are made to that of hidden length and sacrificial bonding in some biological systems such as proteins, bone, and nacre.

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...

scholarly journals Performance of SCAN Meta-GGA Functionals on Nonlinear Mechanics of Graphene-Like g-SiC

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 120
Author(s):  
Qing Peng
Keyword(s):  
Mechanical Properties ◽  
Density Functional ◽  
Large Strains ◽  
Two Dimensional ◽  
Nonlinear Mechanics ◽  
Generalized Gradient ◽  
Mechanics Of Materials ◽  
Nonlinear Mechanical ◽  
Direct Band ◽  
Simulations And Modeling

Although meta-generalized-gradient approximations (meta-GGAs) are believed potentially the most accurate among the efficient first-principles calculations, the performance has not been accessed on the nonlinear mechanical properties of two-dimensional nanomaterials. Graphene, like two-dimensional silicon carbide g-SiC, has a wide direct band-gap with applications in high-power electronics and solar energy. Taken g-SiC as a paradigm, we have investigated the performance of meta-GGA functionals on the nonlinear mechanical properties under large strains, both compressive and tensile, along three deformation modes using Strongly Constrained and Appropriately Normed Semilocal Density Functional (SCAN) as an example. A close comparison suggests that the nonlinear mechanics predicted from SCAN are very similar to that of Perdew-Burke-Ernzerhof (PBE) formulated functional, a standard Density Functional Theory (DFT) functional. The improvement from SCAN calculation over PBE calculation is minor, despite the considerable increase of computing demand. This study could be helpful in selection of density functionals in simulations and modeling of mechanics of materials.

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

Monitoring the Travel Characteristics of High Voltage Circuit Breaker Based on TLD

2014 ◽  
Vol 687-691 ◽  
pp. 938-941
Author(s):  
Bao Shu Li ◽  
Shang Chen ◽  
Xian Ping Zhao ◽  
Wei Hua Niu
Keyword(s):  
Mechanical Properties ◽  
Circuit Breaker ◽  
Travel Speed ◽  
Video Tracking ◽  
Two Dimensional ◽  
High Voltage Circuit Breaker ◽  
Vacuum Circuit Breaker ◽  
Tracking Technology ◽  
Methods Of Measurement ◽  
Speed Characteristic

For the circuit breaker, mechanical fault make up the largest share of the fault. In order to ensure reliable and secure power system can run,it is necessary to monitor the mechanical properties of the circuit breaker,which includes monitoring the breaker trip.By TLD video tracking technology ZN65-12 vacuum circuit breaker mechanical properties were measured,obtain a two-dimensional direction of travel, speed characteristic curves.The experimental results show that the error of the method used to obtain a circuit breaker stroke, speed and other parameters of not more than 1mm,compared with traditional methods of measurement can get richer information.

scholarly journals Two-Dimensional Boron Hydride Sheets: High Stability, Massless Dirac Fermions, and Excellent Mechanical Properties

2016 ◽  
Vol 128 (35) ◽  
pp. 10448-10451 ◽  
Author(s):  
Yalong Jiao ◽  
Fengxian Ma ◽  
John Bell ◽  
Ante Bilic ◽  
Aijun Du
Keyword(s):  
Mechanical Properties ◽  
High Stability ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Boron Hydride

scholarly journals Flame-retardant MXene/Polyimide Film with Outstanding Thermal and Mechanical Properties Based on the Secondary Orientation Strategy

2021 ◽  
Author(s):  
Yue Zhu ◽  
Qingyu Peng ◽  
Haowen Zheng ◽  
Fuhua Xue ◽  
Pengyang Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Transition Metal ◽  
Mechanical Performance ◽  
Polyimide Film ◽  
Polymeric Films ◽  
Two Dimensional ◽  
Thermal And Mechanical Properties ◽  
Metal Carbides ◽  
Transition Metal Carbides

With the development of multifunction and miniaturization in modern electronics, polymeric films with strong mechanical performance and high thermal conductivity are urgently needed. Two-dimensional transition metal carbides and nitrides (MXenes)...

Two-dimensional coordination polymers and metal–organic gels of symmetrical and unsymmetrical dipyridyl β-diketones: luminescence, dye absorption and mechanical properties

2016 ◽  
Vol 40 (3) ◽  
pp. 1997-2006 ◽  
Author(s):  
Kaustuv Banerjee ◽  
Kumar Biradha
Keyword(s):  
Mechanical Properties ◽  
Functional Groups ◽  
Coordination Polymers ◽  
Two Dimensional ◽  
Dye Absorption ◽  
Metal Organic

The ligands containing chelating as well as exodentate functional groups were shown to form functional coordination polymers and heterometallic gels.

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>

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