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The electronic and vibrational density of states of a semiconducting carbon nanotube in a crossed junction was investigated by elastic and inelastic scanning tunneling spectroscopy. The strong radial compression of the nanotube at the…

材料科学 · 物理学 2009-11-11 L. Vitali , M. Burghard , P. Wahl , M. A. Schneider , K. Kern

We have studied the resistance of single-wall carbon nanotubes measured in a four-point configuration with noninvasive voltage electrodes. The voltage drop is detected using multiwalled carbon nanotubes while the current is injected through…

介观与纳米尺度物理 · 物理学 2009-11-11 B. Gao , Y. F. Chen , M. S. Fuhrer , D. C. Glattli , A. Bachtold

We investigate the sympathetic relaxation of a free-standing, vibrating carbon nano-tube that is mounted on an atom chip and is immersed in a cloud of ultra-cold atoms. Gas atoms colliding with the nano-tube excite phonons via a…

量子物理 · 物理学 2015-06-16 C. T. Weiß , P. V. Mironova , J. Fortágh , W. P. Schleich , R. Walser

We propose an experimentally viable setup for the realization of one-dimensional ultracold atom gases in a nanoscale magnetic waveguide formed by single doubly-clamped suspended carbon nanotubes. We show that all common decoherence and atom…

量子物理 · 物理学 2007-05-23 V. Peano , M. Thorwart , A. Kasper , R. Egger

Extensive molecular dynamics simulations of water permeation and ion selectivity of the single-walled carbon nanotubes with the radial deformation are presented . The simulated results indicate that there is a close relationship between the…

介观与纳米尺度物理 · 物理学 2012-03-01 Xu Kui , Wang Qing-Song , Tan Bin , Chen Ming-Xuan , Miao Ling , Jiang Jian-Jun

Three typical one-dimensional (1D)/quasi-1D nanocarbons, linear carbon chains, carbon nanotubes, and graphene nanoribbons have been proven to grow inside single-wall carbon nanotubes. This gives rise to three types of hybrid materials whose…

材料科学 · 物理学 2021-01-29 Weili Cui , Takeshi Saito , Paola Ayala , Thomas Pichler , Lei Shi

Few-layered black phosphorus materials recently attract much attention due to its special electronic properties. As a Consequence, the nano-tube from a single-layer black phosphorus has been theoretically built. The corresponding electronic…

介观与纳米尺度物理 · 物理学 2016-06-22 Kun Cai , Jing Wan , Ning Wei , Qinghua Qin

We report a detailed study of the vibrational properties of BN single-walled nanotubes and of the BN monolayer. Our results have been obtained from a well-established Tight-Binding model complemented with an electrostatic model to account…

材料科学 · 物理学 2009-11-07 Daniel Sanchez-Portal , Eduardo Hernandez

The conduction of a single-wall carbon nanotube depends on the pitch. If there are an integral number of carbon hexagons per pitch, then the system is periodic along the tube axis and allows "holes" (, and not "electrons",) to move inside…

介观与纳米尺度物理 · 物理学 2010-03-30 S. Fujita , S. Moon , Y. Takato , James McNabb , S. Godoy

The radial thermal expansion coefficient (a)r of pure and Xe-saturated bundles of single-walled carbon nanotubes has been measured in the interval 2.2-120 K. The coefficient is positive above T = 5.5 K and negative at lower temperatures.…

A mechanically bistable single-walled carbon nanotube can act as a variable-shaped capacitor with a voltage-controlled transition between collapsed and inflated states. This external control parameter provides a means to tune the system so…

介观与纳米尺度物理 · 物理学 2015-05-20 Oleg E. Shklyaev , Eric Mockensturm , Vincent H. Crespi

We apply first principles calculations to study the opening of single-wall carbon nanotubes (SWNT's) by oxidation. We show that an oxygen rim can stabilize the edge of the open tube. The sublimation of CO$_2$ molecules from the rim with the…

An extensive first-principles study of fully exo-hydrogenated zigzag (n,0) and armchair (n,n) single wall carbon nanotubes (C$_n$H$_n$), polyhedral molecules including cubane, dodecahedrane, and C$_{60}$H$_{60}$ points to crucial…

材料科学 · 物理学 2016-08-16 T. Yildirim , O. Gülseren , S. Ciraci

Recently experiments showed that nodal structural defects are readily formed in the synthesis of single-walled carbon nanotubes (SWNTs) and consequently, SWNTs are likely to deviate from well-defined seamless tubular structures. Here, using…

介观与纳米尺度物理 · 物理学 2014-10-02 Young I. Jhon , Woonjo Cho , Seok Lee , Young Min Jhon

The propagation of transverse impact energy in a multilayer packing (in an array) of parallel single-walled carbon nanotubes has been simulated. It has been shown that such nanotube arrays are effective shock absorbers. The depreciation…

介观与纳米尺度物理 · 物理学 2025-07-17 Alexander V. Savin

Using Monte Carlo simulations, we investigate the possibility of an orientational melting transition within a "rope" of (10,10) carbon nanotubes. When twisting nanotubes bundle up during the synthesis, orientational dislocations or twistons…

材料科学 · 物理学 2009-10-31 Young-Kyun Kwon , David Tomanek

A novel two-dimensional carbon allotrope called PCF-graphene has been theoretically proposed. The development of its nanostructured morphology has arrangement a non-aromatic molecule cyclooctatetraene as a precursor (poly-cyclooctatetraene…

计算物理 · 物理学 2023-10-04 Reza Kalami , Seyed Ahmad Ketabi , José M. De Sousa

We present a computational study on the impact of tensile/compressive uniaxial ($\varepsilon_{xx}$) and biaxial ($\varepsilon_{xx}=\varepsilon_{yy}$) strain on monolayer MoS$_{2}$ NMOS and PMOS FETs. The material properties like band…

介观与纳米尺度物理 · 物理学 2013-08-02 Amretashis Sengupta , Ram Krishna Ghosh , Santanu Mahapatra

We used density-functional theory based first principles simulations to study the effects of uniaxial strain and quantum confinement on the electronic properties of germanium nanowires along the [110] direction, such as the energy gap and…

计算物理 · 物理学 2015-05-20 Paul Logan , Xihong Peng

We have measured the thermoelectric power (S) of high purity single-walled carbon nanotube mats as a function of temperature at various hydrostatic pressures up to 2.0 GPa. The thermoelectric power is positive, and it increases in a…

强关联电子 · 物理学 2014-01-15 N. Barisic , R. Gaal , I. Kezsmarki , G. Mihaly , L. Forro