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The full symmetry groups for all single- and multi-wall carbon nanotubes are found. As for the single-wall tubes, the symmetries form nonabelian nonsymorphic line groups, enlarging the groups reported in literature. In the multi-wall case,…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 M. Damnjanovic , I. Milosevic , T. Vukovic , R. Sredanovic

This paper is the first one of a series of two articles in which we revisit the optical properties of single-walled carbon nanotubes (SWNT). Produced by rolling up a graphene sheet, SWNT owe their intriguing properties to their cylindrical…

Mathematical Physics · Physics 2018-11-30 Morten Rasmussen , Benjamin Ricaud , Baptiste Savoie

Macroscopic fibers of carbon nanotubes (CNT) have emerged as an ideal architecture to exploit the exceptional properties of CNT building blocks in applications ranging from energy storage to reinforcement in structural composites.…

Based on the non-equilibrium molecular dynamics simulations, we have studied the thermal conductivities of a novel ultra-thin one-dimensional carbon nanomaterial - diamond nanothread (DNT). Unlike single-wall carbon nanotube (CNT), the…

Materials Science · Physics 2015-11-06 Haifei Zhan , Gang Zhang , Yingyan Zhang , V. B. C. Tan , John M. Bell , Yuantong Gu

Exploring various topological states (TS) and topological phase transitions (TPT) has attracted great attention in condensed matter physics. However, so far, there is rarely a typical material system that can be used as a platform to study…

Materials Science · Physics 2024-03-15 Yan Gao , Yu Du , Yun-Yun Bai , Weikang Wu , Qiang Wang , Yong Liu , Kai Liu , Zhong-Yi Lu

The shape of crystalline nanoparticles (NP) can often be described by polyhedra with flat facet surfaces. Thus, structural studies of polyhedral bodies can help to describe geometric details of NPs. Here we consider compact polyhedra of…

Mesoscale and Nanoscale Physics · Physics 2023-07-24 Klaus E. Hermann

In their tubelike phase, nanowire-adsorbed polymers exhibit strong structural similarities to morphologies known from single-walled carbon (hexagonal) and boron (triangular) nanotubes. Since boron/boron nitride tubes require some disorder…

Soft Condensed Matter · Physics 2021-05-13 Thomas Vogel , Tali Mutat , Joan Adler , Michael Bachmann

Structure of the spin-orbit coupling varies from material to material and thus finding the correct spin-orbit coupling structure is an important step towards advanced spintronic applications. We show theoretically that the curvature in a…

Mesoscale and Nanoscale Physics · Physics 2011-09-14 Jae-Seung Jeong , Hyun-Woo Lee

A theory of linearly elastic orthotropic shells is presented, with potential application to the continuous modeling of Carbon NanoTubes. Two relevant features are: the selected type of orthotropic response, which should be suitable to…

Mathematical Physics · Physics 2016-01-20 Antonino Favata , Paolo Podio-Guidugli

We present a multispectroscopic structural study of various nanotube samples with different tube diameters. We determine for each sample the mean bundle and tube diameter as well as the tube diameter distribution. The possibility to work on…

Other Condensed Matter · Physics 2007-05-23 Nicolas Izard , Didier Riehl , Eric Anglaret

Carbon nanotube (CNT) fibres are firmly established as a new high-performance fibre, but their tensile mechanical properties remain a relatively small fraction of those of the constituent CNTs. Clear structure-property relations and…

Applied Physics · Physics 2020-08-05 J. C. Fernández-Toribio , A. Mikhalchan , C. Santos , A. Ridruejo , J. J. Vilatela

Amorphous carbon nanotubes (a-CNT) with up to four walls and sizes ranging from 200 to 3200 atoms have been simulated, starting from initial random configurations and using the Gaussian Approximation Potential [Phys. Rev. B 95, 094203…

Materials Science · Physics 2023-03-22 C. Ugwumadu , R. Thapa , Y. Al-Majali , J. Trembly , D. A. Drabold

Efforts aimed at large-scale integration of nanoelectronic devices that exploit the superior electronic and mechanical properties of single-walled carbon nanotubes (SWCNTs) remain limited by the difficulties associated with manipulation and…

We systematically investigate the relationships between structural and electronic effects of finite size zigzag or armchair carbon nanotubes of various diameters and lengths, starting from a molecular template of varying shape and diameter,…

The single-wall carbon nanotube (SWNT) can be a one-dimensional topological insulator, which is characterized by a $\mathbb{Z}$-topological invariant, winding number. Using the analytical expression for the winding number, we classify the…

Mesoscale and Nanoscale Physics · Physics 2019-03-13 Rin Okuyama , Wataru Izumida , Mikio Eto

The optoelectronic properties of single- and double-wall carbon nanotubes (CNTs) noncovalently functionalized with tetraphenylporphyrins (TPPs) are addressed by dispersion-corrected ab initio calculations. Five CNT species with different…

Materials Science · Physics 2017-01-04 Walter Orellana

Random networks of single-walled carbon nanotubes (CNTs) usually contain both metallic (m-CNTs) and semiconducting (s-CNTs) nanotubes with an approximate ratio of 1:2, which leads to a trade-off between on-conductance and on/off ratio. We…

Materials Science · Physics 2016-12-28 Igor Stanković , Milan Žeželj

Carbon nanotubes (CNT) belong to the most promising new materials which can in the near future revolutionize the conventional electronics. When sandwiched between ferromagnetic electrodes, the CNT behaves like a spacer in conventional…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. Krompiewski

We report a general scheme to systematically construct two classes of structural families of superhard sp3 carbon allotropes of cold compressed graphite through the topological analysis of odd 5+7 or even 4+8 membered carbon rings stemmed…

Materials Science · Physics 2015-06-04 Haiyang Niu , Xing-Qiu Chen , Shibing Wang , Dianzhong Li , Wendy L. Mao , Yiyi Li

Carbon nanotubes (CNT) hold enormous technological promise. It can only be harnessed if one controls in a practical way the CNT chirality, the feature of the tubular carbon topology that governs all the CNT properties---electronic, optical,…

Materials Science · Physics 2014-09-18 Vasilii I. Artyukhov , Evgeni S. Penev , Boris I. Yakobson