Rotational Dynamics and Friction in Double-Walled Carbon Nanotubes

Servantie, James; Gaspard, Pierre

doi:10.1103/physrevlett.97.186106

Cited by 66 publications

(80 citation statements)

References 20 publications

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“…For temperature as low as 100 K the thermal energy is estimated to be much larger than the corrugation energy against rotation. 33 Our nanomotor should spin with a rotational frequency in the range of GHz at room temperature, based on estimates for the dynamical friction of 10 −30 NM/ nm 2 / Hz. 33 The proposed motor could be useful in the next generation of synthetic nanometer-scale electromechanical systems.…”

Section: Spin-transfer Nanomotormentioning

confidence: 99%

“…33 Our nanomotor should spin with a rotational frequency in the range of GHz at room temperature, based on estimates for the dynamical friction of 10 −30 NM/ nm 2 / Hz. 33 The proposed motor could be useful in the next generation of synthetic nanometer-scale electromechanical systems. With an attached metal plate, the rotor can serve as a mirror, with relevance to high-density switching devices.…”

Section: Spin-transfer Nanomotormentioning

confidence: 99%

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Current-driven ferromagnetic resonance, mechanical torques, and rotary motion in magnetic nanostructures

2007

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We study theoretically the detection and possible utilization of electric current-induced mechanical torques in ferromagnetic-normal-metal heterostructures generated by spin-flip scattering or the absorption of transverse spin currents by a ferromagnet. To this end, we analyze the dc voltage signals over a spin valve driven by an ac current. In agreement with recent studies, this "rectification," measured as a function of ac frequency and applied magnetic field, contains important information on the magnetostatics and magnetodynamics. Subsequently, we show that the vibrations excited by spin-transfer to the lattice can be detected as a splitting of the dc voltage resonance. Finally, we propose a concept for a spin-transfer-driven electric nanomotor based on integrating metallic nanowires with carbon nanotubes, in which the current-induced torques generate a rotary motion.

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Section: Spin-transfer Nanomotormentioning

confidence: 99%

Section: Spin-transfer Nanomotormentioning

confidence: 99%

Current-driven ferromagnetic resonance, mechanical torques, and rotary motion in magnetic nanostructures

2007

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“…Simulation results presented in Table I and Table II and Fig. 10 clearly show that the friction has a nonlinear relation with the contact area and has an upper limiting value that is not surpassed with the increase of contact area at a constant indentation depth, a point which has not been reported in previous researches that have suggested either a linear relation [33][34][35][36] or a nonlinear relation [37] between friction force and contact area. In this study the interaction between silicon nanoplates and CNT is described by Lennard-Jones (LJ) 12-6 function; and the extent of the interactions is defined by the cutoff distance (10.0Å according to [30]).…”

Section: Molecular Dynamics Methodsmentioning

confidence: 63%

On the Sensitivity of Nanogripper-Carbon Nanotube Friction to Contact Area

Haddadi¹,

Kashani

Panahi

et al. 2017

e-J. Surf. Sci. Nanotech.

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Despite the large volume of research dedicated to the structure and functioning of nano-electromechanical systems, few researchers have addressed the practical problems involved in their manufacture and manipulation. This paper investigates the friction phenomenon in Carbon Nanotubes (CNTs) being grasped/manipulated by a nanogripper. Molecular Dynamics (MD) simulations are employed to model the combination of friction and molecular adhesion that governs the mechanical behavior of a CNT when subjected to various loads from the gripper. It is shown that for a certain gripping force, friction between the CNT and the gripper is nonlinearly proportional to the contact area up to a certain value, and remains unchanged afterwards. This is contrary to the common belief that any amount of friction force required for detaching/relocating of CNTs could be achieved by increasing the gripping force. The implications of this finding could affect the way nanogrippers are designed for the construction/manipulation of nanoparticles.

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“…[14]. Further, Servantie [15], Servantie and Garspard [16] pushed the research forward by studying rotational dynamics of DWCNT, showing that dynamic friction is linear in the angular velocity and relaxation time in large system should be essential.…”

Section: Introductionmentioning

confidence: 96%

Investigation on coaxial stability of nano-bearing under two axis-deviation perturbations

Yin

Huang

2010

Sci. China Phys. Mech. Astron.

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A spatial cylindrical model on nano-bearing constructed by double-walled carbon nano-tube (DWCNT) is established. Two motion equations are advanced to characterize the eccentric and deflective mode of the nano-bearing, respectively. On the basis of these equations, the coaxial stability of the nano-bearing under two axis-deviation perturbations is investigated. A characteristic parameter λ * governing the coaxial stability of the nano-bearing is determined. The influences of the angular velocity, interlayer spacing and axial length of the nano-bearing on the characteristic parameter λ * are analyzed and discussed in detail. It is found that when the angular velocity or interlayer spacing is smaller than a certain critical value, the parameter λ * keeps negative, and the coaxial stability of the nano-bearing is maintained. However, the axial length has very insignificant influence on λ * . In addition, for the two non-coaxial modes, the eccentric mode occurs more easily than the deflective one. The results of this paper provide a further insight into the coaxial stability of nano-bearing via the spatial model. nano-bearing, coaxial stability, eccentric mode, deflective mode PACS: 62.25.+g, 85.35.Kt, 45.80.+r

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Rotational Dynamics and Friction in Double-Walled Carbon Nanotubes

Cited by 66 publications

References 20 publications

Current-driven ferromagnetic resonance, mechanical torques, and rotary motion in magnetic nanostructures

Current-driven ferromagnetic resonance, mechanical torques, and rotary motion in magnetic nanostructures

On the Sensitivity of Nanogripper-Carbon Nanotube Friction to Contact Area

Investigation on coaxial stability of nano-bearing under two axis-deviation perturbations

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