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Carbon nanoscrolls (CNSs) are nanomaterials with geometry resembling graphene layers rolled up into a spiral (papyrus-like) form. Effects of hydrogenation and temperature on the self-scrolling process of two nanoribbons interacting with a…

Materials Science · Physics 2022-08-02 M. L. Pereira Júnior , L. A. Ribeiro Júnior , D. S. Galvão , J. M. De Sousa

Carbon nanoribbons (CNRs) are graphene (planar) structures with large aspect ratio. Carbon nanobelts (CNBs) are small graphene nanoribbons rolled up into spiral-like structures, i. e., carbon nanoscrolls (CNSs) with large aspect ratio. In…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 B. V. C. Martins , D. S. Galvão

The behavior of nanostructures under high strain-rate conditions has been object of interest in recent years. For instance, recent experimental investigations showed that at high velocity impacts carbon nanotubes can unzip resulting into…

The unique topology and exceptional properties of carbon nanoscrolls (CNSs) have inspired unconventional nano-device concepts, yet the fabrication of CNSs remains rather challenging. Using molecular dynamics simulations, we demonstrate the…

Mesoscale and Nanoscale Physics · Physics 2011-11-21 Zhao Zhang , Teng Li

Carbon nanoscrolls (CNSs) are structures formed by rolling up graphene layers into a papyruslike shape. CNNs have been experimentally produced by different groups. Boron nitride nanoscrolls (BNNSs) are similar structures using boron nitride…

Materials Science · Physics 2014-02-28 Eric Perim , Douglas S. Galvao

The behavior of nanostructures under high strain-rate conditions has been object of theoretical and experimental investigations in recent years. For instance, it has been shown that carbon and boron nitride nanotubes can be unzipped into…

Graphynes and graphdiynes are carbon 2D allotrope structures presenting both sp2 and sp hybridized atoms. These materials have been theoretically predicted but due to intrinsic difficulties in their synthesis, only recently some of these…

Mesoscale and Nanoscale Physics · Physics 2017-02-21 Daniel Solis , Cristiano F. Woellner , Daiane D. Borges , Douglas S. Galvao

Nanoscrolls consist of sheets rolled up into a papyrus-like form. Their open ends produce great radial flexibility, which can be exploited for a large variety of applications, from actuators to hydrogen storage. They have been successfully…

Mesoscale and Nanoscale Physics · Physics 2015-06-02 Eric Perim , Douglas S. Galvao

Carbon nanoscroll is a unique topologically open configuration of graphene nanoribbon possessing outstanding properties and application perspectives due to its morphology. However molecular dynamics study of nanoscrolls with more than a few…

Mesoscale and Nanoscale Physics · Physics 2015-07-15 Alexander V. Savin , Elena A. Korznikova , Sergey V. Dmitriev

Nanoscrolls (papyrus-like nanostructures) are very attractive structures for a variety of applications, due to their tunable diameter values and large accessible surface area. They have been successfully synthesized from different…

Materials Science · Physics 2019-06-05 Eric Perim , Douglas S. Galvao

The synthesis of single-wall carbon nanotubes (SWCNTs) of desired diameters and chiralities is critical to the design of nanoscale electronic devices with desired properties.1-6 The existing methods are based on self-assembly, 7-16…

Materials Science · Physics 2009-11-13 Anton Sidorov , David Mudd , Gamini Sumanasekera , P. J. Ouseph , C. S. Jayanthi , Shi-Yu Wu*

Graphene-based nanofolds (GNFs) are edge-connected 2D stacked monolayers originated from single-layer graphene. Graphene-based nanoscrolls (GNSs) are nanomaterials with geometry resembling graphene layers rolled up into a spiral…

Materials Science · Physics 2021-09-23 Marcelo Lopes Pereira Junior , Luiz Antonio Ribeiro Junior

Graphynes and graphdiynes are generic names for families of two-dimensional carbon allotropes, where acetylenic groups connect benzenoid-like hexagonal rings, with the co-existence of sp and sp2 hybridized carbon atoms. The main differences…

Mesoscale and Nanoscale Physics · Physics 2018-03-02 Daniel Solis , Daiane D. Borges , Cristiano F. Woellner , Douglas S. Galvao

How to form carbon nanoscrolls with the non-uniform curvatures is worthy of a detailed investigation. The first-principles method is suitable in studying the combined effects due to the finite-size confinement, the edge-dependent…

Mesoscale and Nanoscale Physics · Physics 2020-08-25 S. L. Chang , C. R. Chiang , S. Y. Lin , M. F. Lin

Graphyne is a planar two-dimensional carbon allotrope formed by atoms in sp, sp2, and sp3 hybridized states. Topologically graphyne nanotubes (GNTs) can be considered as cylindrically rolled up graphyne sheets, similarly as carbon nanotubes…

Mesoscale and Nanoscale Physics · Physics 2015-09-30 Jose M. de Sousa , Gustavo Brunetto , Vitor R. Coluci , Douglas S. Galvao

Graphyne nanotubes (GNTs) are nanostructures obtained from rolled up graphyne sheets, in the same way carbon nanotubes (CNTs) are obtained from graphene ones. Graphynes are 2D carbon-allotropes composed of atoms in sp and sp2 hybridized…

A model for the formation of carbon nanotubes (CNTs) and layered graphene in an arc discharge method is developed on the basis of observed erosion of graphite anode under various experimental conditions and analyses of the morphology of the…

Materials Science · Physics 2019-07-23 Soumen Karmakar

Carbon Nanotubes (CNTs) are one of the most important materials in nanotechnology. In some of their technological applications (electromechanical oscillators and mechanical actuators for artificial muscles, for instance), it is necessary to…

Mesoscale and Nanoscale Physics · Physics 2015-10-02 Jose M. de Sousa , Pedro A. S. Autreto , Douglas S. Galvao

The structure and motion of carbon and h-BN nanotubes (NTs) deposited on graphene is inquired theoretically by simulations based on state-of-the-art interatomic force fields. Results show that any typical cylinder-over-surface approximation…

Mesoscale and Nanoscale Physics · Physics 2020-06-17 Davide Mandelli , Roberto Guerra

Graphene and single-wall carbon nanotube (SWCNT) have attracted great attention because of their ultra-high thermal conductivity. However, there are few works exploring the relations of their thermal conductivity quantitatively. The carbon…

Mesoscale and Nanoscale Physics · Physics 2016-12-20 Dengke Ma , Han Meng , Xiaoman Wang , Nuo Yang , Xing Zhang
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