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The catalytic activity of metal nanoparticles toward nucleation of single-walled carbon nanotubes (SWCNTs) is fundamental to achieving structure-controlled growth using catalytic chemical vapor deposition (CVD). Despite the success of…

材料科学 · 物理学 2025-06-16 Ben McLean , Alister J. Page , Feng Ding

Carbon nanotubes (CNTs) are currently considered a successor to silicon in future nanoelectronic devices. To realize this, controlled growth of defect-free nanotubes is required. Until now, the understanding of atomic-scale CNT growth…

In this paper, we model the evolution and self-assembly of randomly oriented carbon nanotubes (CNTs), grown on a metallic substrate in the form of a thin film for field emission under diode configuration. Despite high output, the current in…

材料科学 · 物理学 2010-04-14 N. Sinha , D. Roy Mahapatra , J. T. W. Yeow , R. V. N. Melnik , D. A. Jaffray

Vapor pressure grows rapidly above the boiling temperature, and past the critical point liquid droplets disintegrate. Our atomistic simulations show that this sequence of events is reversed inside carbon nanotubes (CNT). Droplets…

材料科学 · 物理学 2012-02-07 Vitaly V. Chaban , Victor V. Prezhdo , Oleg V. Prezhdo

Order(N) Tight-Binding Molecular Dynamics (TBMD) simulations are performed to investigate the thermal stability of (10,10) metallic Single-Walled Carbon Nanotubes (SWCNT). Periodic boundary conditions (PBC) are applied in axial direction.…

材料科学 · 物理学 2009-11-13 G. Dereli , B. Sungu , C. Ozdogan

Carbon nanotubes (CNTs - long tubular carbon nanostructures) belong to the best electron field emitting materials. Based on the experimentally determined electron density in the dual hot filament/DC plasma deposition system the electric…

等离子体物理 · 物理学 2007-05-23 J. Blazek , P. Spatenka , Ch. Taeschner , A. Leonhardt

Carbon nanotubes (CNTs) are stiff, all-carbon macromolecules with diameters as small as one nanometer and few microns long. Solutions of CNTs in chlorosulfonic acid (CSA) follow the phase behavior of rigid rod polymers interacting via a…

Carbon Nanotubes (CNTs) of sufficiently large diameter and a few layers self-collapse into flat ribbons at atmospheric pressure, forming bundles of stacked CNTs that maximize packing and thus CNT interaction. Their improved stress transfer…

Transformation of carbon dioxide into carbon nanotubes, CNTs, by electrolysis in molten carbonates provides a low cost route to extract and store this greenhouse gas. CNTs are more stable, compact and valuable than fuels or other CO2…

材料科学 · 物理学 2016-07-11 Stuart Licht , Matthew Lefler , Jiawen Ren , Juan Vicini

We propose a microscopic model for a nanoelectromechanical system made by a radio-frequency driven suspended carbon nanotube (CNT) in the presence of an external magnetic field perpendicular to the current. As a main result, we show that,…

介观与纳米尺度物理 · 物理学 2015-06-12 A. Nocera , C. A. Perroni , V. Marigliano Ramaglia , G. Cantele , V. Cataudella

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.…

Sorbent materials are a promising alternative to advance hydrogen storage technologies. The general disadvantage is the relatively weak solid-gas interaction and adsorption energy, providing low gravimetric and volumetric capacities and…

材料科学 · 物理学 2022-11-28 Shima Rezaie , David M. J. Smeulders , Azahara Luna-Triguero

Recent advances in nanotechnology have provided new materials which have the potential to surpass copper and aluminum alloys in electrical conductivity, weight and ampacity [2-6]. Among these carbon nanotubes (CNTs) stand out due to their…

应用物理 · 物理学 2020-08-28 Farhad Daneshvar , Hung-Jue Sue

The controlled growth of carbon nitride (CN) films with tailored electronic properties and surface area is quite challenging due to the solid-state reaction and the lack of efficient interaction between C-N monomers and substrates. Herein,…

应用物理 · 物理学 2021-07-19 Neeta Karjule , Moumita Rana , Menny Shalom , Jesús Barrio , Juan Jos'{e} Vilatela

Carbon nanotubes have properties depending on the arrangement of carbon atoms on the tube walls, called chirality. Also it has been tried to grow nanotubes of only one chirality for more than a decade it is still not possible today. A…

材料科学 · 物理学 2013-05-02 Heiko Dumlich , John Robertson , Stephanie Reich

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…

应用物理 · 物理学 2020-08-05 J. C. Fernández-Toribio , A. Mikhalchan , C. Santos , A. Ridruejo , J. J. Vilatela

The atomistic simulations of carbon nanotube (CNT) - carbon reinforced composite material are reported. The studied composite samples were obtained by impregnating certain amounts of CNTs (3,3) and (6,6) into pristine graphite matrix. The…

材料科学 · 物理学 2011-03-14 Vitaly Chaban

The one-dimensional confinement of quasiparticles in individual carbon nanotubes (CNTs) leads to extremely anisotropic electronic and optical properties. In a macroscopic ensemble of randomly oriented CNTs, this anisotropy disappears…

We find that negative charges on an armchair single-walled carbon nanotube (SWCNT) can significantly enhance the migration of a carbon adatom on the external surfaces of SWCNTs, along the direction of the tube axis. Nanotube charging…

原子与分子团簇 · 物理学 2017-03-14 Longtao Han , Predrag Krstic , Igor Kaganovich , Roberto Car

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…

材料科学 · 物理学 2023-03-22 C. Ugwumadu , R. Thapa , Y. Al-Majali , J. Trembly , D. A. Drabold