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相关论文: Dynamical Formation of Graphene and Graphane Nanos…

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Interaction between carbon nanomaterials and micellar substrates is studied. A notable observation is the dependence of nano-surface topology on thermodynamic signatures of the carbon nanomaterials e.g., single wall carbon nanotube (SWNT),…

材料科学 · 物理学 2015-07-08 Tamoghna Bhattacharyaa , Anjan Kr. Dasgupta

Two experimental studies reported the spontaneous formation of amorphous and crystalline structures of C60 intercalated between graphene and a substrate. They observed interesting phenomena ranging from reaction between C60 molecules under…

介观与纳米尺度物理 · 物理学 2019-10-21 Alexandre F. Fonseca , Sócrates O. Dantas , Douglas S. Galvão , Difan Zhang , Susan B. Sinnott

Graphene and carbon nanotubes (CNTs) share the same atomic structure of hexagonal carbon lattice. Yet, their synthesis differs in many aspects, including the shape and size of the catalyst. Here, we demonstrate a floating-catalyst chemical…

In this work we have investigated the mechanical properties and fracture patterns of some graphene nanowiggles (GNWs). Graphene nanoribbons are finite graphene segments with a large aspect ratio, while GNWs are nonaligned periodic…

介观与纳米尺度物理 · 物理学 2019-06-05 R. A. Bizao , T. Botari , D. S. Galvao

Density-functional tight-binding and classical molecular dynamics simulations are used to investigate the structural deformations and melting of planar carbon nano-clusters $C_{N}$ with N=2-55. The minimum energy configurations for…

材料科学 · 物理学 2013-04-23 Sandeep Kumar Singh , M. Neek-Amal , F. M. Peeters

Aligned graphene nanoribbon (GNR) arrays were made by unzipping of aligned single-walled and few-walled carbon nanotube (CNT) arrays. Nanotube unzipping was achieved by a polymer-protected Ar plasma etching method, and the resulting…

材料科学 · 物理学 2010-05-03 Liying Jiao , Li Zhang , Lei Ding , Jie Liu , Hongjie Dai

Carbon-based tubular materials have sparked a great interest for future electronics and optoelectronics device applications. In this work, we computationally studied the mechanical properties of nanotubes generated from popgraphene…

材料科学 · 物理学 2020-10-08 W. H. S. Brandão , A. L. Aguiar , L. A. Ribeiro , D. S. Galvão , J. M. De Sousa

Carbon nitride-based nanostructures have attracted special attention (from theory and experiments) due to their remarkable electromechanical properties. In this work we have investigated the mechanical properties of some graphene-like…

材料科学 · 物理学 2016-06-06 J. M. de Sousa , T. Botari , E. Perim , R. A. Bizao , Douglas S. Galvao

Graphene nanoribbons (GNRs) are one-dimensional nanostructures predicted to display a rich variety of electronic behaviors. Depending on their structure, GNRs realize metallic and semiconducting electronic structures with band gaps that can…

介观与纳米尺度物理 · 物理学 2013-10-16 Oleg V. Yazyev

Recently, laser-assisted chemical vapor deposition was used to synthesize a free-standing, continuous, and stable monolayer amorphous carbon (MAC). MAC is a pure carbon structure composed of randomly distributed five, six, seven, and eight…

We investigate the local electron temperature distribution in carbon nano-ribbon (CNR) and graphene junctions subject to an applied thermal gradient. Using a realistic model of a scanning thermal microscope, we predict quantum temperature…

介观与纳米尺度物理 · 物理学 2013-06-21 Justin P. Bergfield , Mark A. Ratner , Charles A. Stafford , Massimiliano Di Ventra

The presence of wrinkles in Graphene Nanoribbons (GNR) and other two-dimensional (2D) materials significantly alter their mechanical, electronic, optical properties, which can be either beneficial or detrimental. Experimentally, it has been…

材料科学 · 物理学 2020-01-06 Jatin Kashyap , Eui-Hyeok Yang , Dibakar Datta

Nano engineered spin degree of freedom in carbon system may offer desired exchange coupling with optimum spin orbit interaction which is essential, to construct solid state qubits, for fault tolerant quantum computation. The purpose of this…

原子与分子团簇 · 物理学 2013-08-27 Ashwini P. Alegaonkar , Arvind Kumar , Satish K. Pardeshi , Prashant S. Alegaonkar

Free-standing carbon nanomembranes (CNM) with molecular thickness and macroscopic size are fascinating objects both for fundamental reasons and for applications in nanotechnology. Although being made from simple and identical precursors…

材料科学 · 物理学 2014-09-17 A. Mrugalla , J. Schnack

Graphene has been reported with record-breaking properties which have opened up huge potential applications. Considerable amount of researches have been devoted to manipulating or modify the properties of graphene to target a more smart…

材料科学 · 物理学 2018-03-20 Kang Xia , Haifei Zhan , Yuantong Gu

Single-walled carbon nanotubes (SWNTs) have many interesting properties; they may be metallic or semiconducting depending on their diameter and helicity of the graphene sheet. Hydrostatic or quasi-hydrostatic high pressures can probe many…

材料科学 · 物理学 2009-11-10 R. Falconi , J. A. Azamar , R. Escudero

Penta-graphene is the name given to a novel puckered monolayer of carbon atoms tightly packed into an inerratic pentagonal network, theoretically, which exhibits excellent thermal and mechanical stability and can be rolled into…

材料科学 · 物理学 2017-09-26 Mingwei Chen , Haifei Zhan , Yinbo Zhu , Hengan Wu , Yuantong Gu

Graphene/carbon-nanotube (CNT) hybrid material can be useful in energy storage and nanoelectronic technologies. Here we address the CNT-oscillator encapsulated in a graphene-nanoribbon (GNR) trench as a novel design, and investigate its…

介观与纳米尺度物理 · 物理学 2016-09-21 Eunae Lee , Jeong Won Kang , Ki-Sub Kim , Oh-Kuen Kwon

Thermal decomposition of vicinal 6H-SiC(0001) surfaces with off-angles toward the $[1\bar{1}00]$ direction results in the appearance of pairs of (0001) macroterraces and $(1\bar{1}0n)$ macrofacets covered with graphene, as follows. A…

材料科学 · 物理学 2021-10-27 Kohei Fukuma , Anton Visikovskiy , Takushi Iimori , Fumio Komori , Satoru Tanaka

This contribution reports on comparative studies on giant magnetoresistance (GMR) in carbon nanotubes (CNTs) and graphene nanoribbons of similar aspect ratios (i.e perimeter/length and width/length ratios, for the former and the latter,…

介观与纳米尺度物理 · 物理学 2008-05-12 S. Krompiewski