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相关论文: Carbon Nanotube Peapods Under High-Strain Rate Con…

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Allotropes of carbon, including one-dimensional carbon nanotubes and two-dimensional graphene sheets, continue to draw attention as promising platforms for probing the physics of electrons in lower dimensions. Recent research has shown that…

介观与纳米尺度物理 · 物理学 2020-05-20 Benedetta Flebus , Allan H. MacDonald

In this work we investigated the encapsulation of C$_20$ and C$_30$ fullerenes into semiconducting carbon nanotubes to study the possibility of bandgap engineering in such systems. Classical molecular dynamics simulations coupled to…

介观与纳米尺度物理 · 物理学 2016-08-16 K. S. Troche , V. R. Coluci , R. Rurali , D. S. Galvão

Carbon foams are hypothetical carbon allotropes that contain graphite-like (sp$^2$ carbon) segments, connected by sp$^3$ carbon atoms, resulting in porous structures. In this work the DFTB (Density Functional based Tight-Binding) method…

材料科学 · 物理学 2013-02-15 Gotthard Seifert , Agnieszka Kuc , Thomas Heine

In this study, using non-equilibrium molecular dynamics simulation, the flow of water in deformed carbon nanotubes is studied for two water models TIP4P/2005 and SPC/FH. The results demonstrated a non-uniform dependence of the flow on the…

Prevalence of electronic gadgets has been on the rise and among several considerations that are important for furthering frontiers of utility of new gadgets is mechanical flexibility of electronic systems. Flexible electronics require…

材料科学 · 物理学 2016-05-10 Terry Lukov , Robinson Smith , Ashley R. Chester

We have calculated electron spin interactions in chains of Sc@C82 endohedral fullerenes in isolation and inserted into a semiconducting or metallic single-walled carbon nanotube to form a peapod. Using hybrid density functional theory…

We report the results of a model calculation for studying the effects of hydrostatic pressure on a bunch of carbon nanotubes. At pressures that we work with, the deformation in axial direction comes out to be negligibly small. We find that…

材料科学 · 物理学 2007-05-23 Shuchi Gupta , Keya Dharamvir , V. K. Jindal

Carbon nano-onions (CNO) are multi-shell fullerenes. In the present work, we used fully atomistic reactive (ReaxFF) molecular dynamics simulations to study the dynamics and structural transformations of CNO structures under high-velocity…

A way to produce new metal-carbon nanoobjects by transformation of a graphene flake with an attached transition metal cluster under electron irradiation is proposed. The transformation process is investigated by molecular dynamics…

Recently Zheng and Jiang [PRL 88, 045503 (2002)], based on static models, have proposed that multiwalled carbon nanotubes could be the basis for a new generation of nanooscilators in the several gigahertz range. In this work we present the…

材料科学 · 物理学 2009-11-07 S. B. Legoas , V. R. Coluci , S. F. Braga , P. Z. Coura , S. O. Dantas , D. S. Galvao

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…

介观与纳米尺度物理 · 物理学 2009-12-19 H. Y. He , B. C. Pan

First-principles simulations were performed to investigate reaction of carbon nanotubes with adsorbed metal atoms. Mechanical modification of their structures enhances chemical reactivity of carbon nanotubes. Adsorption of a tungsten,…

材料科学 · 物理学 2015-05-18 Naoki Hosoya , Koichi Kusakabe , S. Uma Maheswari

The outstanding multidisciplinary applicability of nanomaterials has paved the path for the rapid advancement of nanoscience during the last few decades. Such technological progress subsequently results in an inevitable environmental…

材料科学 · 物理学 2021-09-30 Arpita Adhikari , Joydip Sengupta

Solid-state based wakefield acceleration of charged particles was previously proposed to obtain extremely high gradients on the order of 1-10 TeV/m. In recent years the possibility of using either metallic or carbon nanotube structures is…

加速器物理 · 物理学 2018-05-04 J. Resta-López , A. Alexandrova , V. Rodin , Y. Wei , C. P. Welsch , Y. Li , G. Xia , Y. Zhao

Density functional methods have been used to calculate the electronic properties of aligned smalldiameter single-walled carbon nanotubes under hydrostatic pressures. Abrupt pressure induced semiconductor-metal and metal-semiconductor…

材料科学 · 物理学 2008-08-27 Sumit Saxena , Trevor A. Tyson

Carbon nanotubes can serve as one-dimensional nanoreactors for the in-tube synthesis of various nanostructures. Experimental observations have shown that chains, inner tubes, or nanoribbons can grow by the thermal decomposition of…

材料科学 · 物理学 2023-06-13 Somayeh Eskandari , János Koltai , István László , Mehran Vaezi , Jenő Kürti

In recent years, many new materials have been developed and prepared to improve the performance of light-harvesting technologies and to develop new and attractive applications. The problem of stability of long-term operation of various…

应用物理 · 物理学 2023-09-28 O. Y. Semchuk , T. Gatti , S. Osella

In this paper, we investigate, by molecular dynamics simulations, the mechanical properties of a new carbon nanostructure, termed graphene nanochain, constructed by sewing up pristine or twisted graphene nanoribbons (GNRs) and interlocking…

材料科学 · 物理学 2013-11-26 Yongping Zheng , Lanqing Xu , Zheyong Fan , Ning Wei , Zhigao Huang

The effects of confining molecular hydrogen within carbon nanohorns are studied via high-resolution quasielastic and inelastic neutron spectroscopies. Both sets of data are remarkably different from those obtained in bulk samples in the…

The stabilization of carbon nanotubes via the filling with inner tubes is demonstrated by probing the optical transitions in double-walled carbon nanotube bundles under hydrostatic pressure with optical spectroscopy. Double-walled carbon…

介观与纳米尺度物理 · 物理学 2018-02-02 B. Anis , K. Haubner , F. Börrnert , L. Dunsch , M. H. Rümmeli , C. A. Kuntscher