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Related papers: C60-Based Composites in view of Topochemical React…

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The current paper presents the third part of the study devoted to composites formed by fullerene C60 and two graphene nanosheets ([C60+(5,5)] and ([C60+(9, 8)] graphene nanobuds). The formation of composites is considered from the basic…

Materials Science · Physics 2011-06-06 E. F. Sheka , L. Kh. Shaymardanova

The current paper is aimed at the determination of barriers that govern the covalent coupling between two fullerenes C60 (C60 dimer), C60 and single-walled carbon nanotube ([C60-(4,4)] carbon nanobud), and C60 and graphene ([C60-(5,5)] and…

Materials Science · Physics 2011-02-07 Elena F Sheka , Landysh Kh Shaymardanova

The current paper opens a series of papers that are aimed at the determination of barriers that govern the covalent coupling between partners of C60-based composites consisting of two or more fullerenes C60 (C60 dimer and oligomers) (Part…

Materials Science · Physics 2011-06-07 E. F. Sheka , L. Kh. Shaymardanova

The electronic and magnetic properties of carbon nanobuds have been investigated using density functional theory. The carbon nanobuds are formed by attaching smaller fullerenes (C20, C28, C36 and C40) of variable size with (5,5) ACNT and…

Mesoscale and Nanoscale Physics · Physics 2020-06-14 Amrish Sharma , Sandeep Kaur , Hitesh Sharma , Isha Mudahar

Large-scale practical applications of fullerene (C60) in nanodevices could be significantly facilitated if the commercially-available micrometer-scale raw C60 powder were further processed into a one-dimensional (1D) nanowire-related…

The formation of graphen-nanotube composites addresses a few basic problems. First, both partners are good donors and acceptors of electrons, which significantly complicates the intermolecular interaction between them leading to a two-well…

Materials Science · Physics 2009-01-26 Elena F. Sheka , Leonid A. Chernozatonskii

Based on density functional theory calculations, we here show that the formation of a fullerene C$_{60}$ carbon "nanobud" (CNB) on carbon nanotube (CNT) caps is energetically more favorable than that on CNT sidewalls. The dominant CNB…

Mesoscale and Nanoscale Physics · Physics 2016-02-17 Ji Il Choi , Hyo Seok Kim , Han Seul Kim , Ga In Lee , Jeung Ku Kang , Yong-Hoon Kim

Fullerene peapods, that is carbon nanotubes encapsulating fullerene molecules, can offer enhanced functionality with respect to empty nanotubes. However, the present incomplete understanding of how a nanotube is affected by entrapped…

Mesoscale and Nanoscale Physics · Physics 2010-09-08 Pawel Utko , Raffaello Ferone , Ilya V. Krive , Robert I. Shekhter , Mats Jonson , Marc Monthioux , Laure Noé , Jesper Nygård

By employing the first-principles calculations, we investigate electronic properties of a novel carbon nanostructure called a carbon nanobud, in which a $C_{60}$ molecule covalently attaches or embeds in an armchair carbon nanotube. We find…

Mesoscale and Nanoscale Physics · Physics 2009-12-19 H. Y. He , B. C. Pan

In this work, a novel electrospun conductive polymer nanocomposite made of polycaprolactone with an exohedral complex made of multiwalled carbon nanotubes and fullerene C60 was prepared and characterized. The preparation was straightforward…

C59N magnetic fullerenes were formed inside single-wall carbon nanotubes by vacuum annealing functionalized C59N molecules encapsulated inside the tubes. A hindered, anisotropic rotation of C59N was deduced from the temperature dependence…

Strongly Correlated Electrons · Physics 2007-05-23 F. Simon , H. Kuzmany , B. Nafradi , T. Feher , L. Forro , F. Fulop , A. Janossy , L. Korecz , A. Rockenbauer , F. Hauke , A. Hirsch

We present a detailed study of the geometry, structure and energetics of carbon nanotube caps. We show that the structure of a cap uniquely determines the chirality of the nanotube that can be attached to it. The structure of the cap is…

Materials Science · Physics 2015-06-25 S. Reich , L. Li , J. Robertson

Hydrogenation from C60 to C60H60 has been studied by unrestricted broken spin symmetry Hartree-Fock approach implemented in semiempirical codes based on AM1 technique. The calculations were focused on sequential addition of hydrogen…

Mesoscale and Nanoscale Physics · Physics 2009-06-16 Elena F. Sheka

The electron-phonon coupling of a theoretically devised carbon phase made by assembling the smallest fullerenes C$_{20}$ is calculated from first principles. The structure consists of C$_{20}$ cages in an {\it fcc} lattice interlinked by…

Materials Science · Physics 2009-11-07 I. Spagnolatti , M. Bernasconi , G. Benedek

We use ab initio density functional calculations to study the formation and structural as well as thermal stability of cellular foam-like carbon nanostructures. These systems with a mixed $sp^2/sp^3$ bonding character may be viewed as…

Materials Science · Physics 2015-06-11 Zhen Zhu , David Tománek

Cyanation C60 to C60(CN)18 and aziridination from C60 to C60(NH)9 have been studied by unrestricted broken spin symmetry Hartree-Fock approach implemented in semiempirical codes based on AM1 technique. The calculations were focused on…

Mesoscale and Nanoscale Physics · Physics 2010-07-26 E. F. Sheka

We investigate the motion of a nano tippe top, which is formed from a C60 fullerene, and which is assumed to be spinning on either a graphene sheet or the interior of a single-walled carbon nanotube. We assume no specific geometric…

Classical Physics · Physics 2009-02-10 Yue Chan , Ngamta Thamwattana , James M. Hill

For the first time, an approach is suggested for the quantitative description of the electronic structure of single-walled carbon nanotubes and the prediction of active sites for the tube controlled functionalization in view of the tube…

Materials Science · Physics 2007-09-24 Elena F. Sheka , Leonid A. Chernozatonskii

Linear nanotubular boron-carbon heterojunctions are systematically constructed and studied with the help of ab initio total energy calculations. The structural compatibility of the two classes of materials is shown, and a simple recipe that…

Materials Science · Physics 2007-05-23 Jens Kunstmann , Alexander Quandt

Investigations of clathrate structures have gained a new impetus with the recent discovery of room-temperature superconductivity in metal hydrides. Here we report the finding, through density functional theory calculations, of a clathrate…

Materials Science · Physics 2021-08-02 Jorge Laranjeira , Leonel Marques , Manuel Melle-Franco , Karol Strutynski , Manuel Barroso
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