Carbon nanotubes as nanopipette: modelling and simulations

Hwang, Ho Jung; Byun, Ki Ryang; Kang, Jeong Won

doi:10.1016/j.physe.2004.03.006

Cited by 41 publications

(20 citation statements)

References 64 publications

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“…From a biological perspective, confined salt-solutions represent appropriate benchmarks to analyze mass and charge transport through complex biological membranes and ionic channels. [1][2][3][4][5] In addition, the subject is relevant in many processes with practical applications in the area of nanofluidics, 6,7 such as selective fluxes through membranes controlled by size, 8 wall-functionalization 9,10 or external fields, [11][12][13] desalinization processes, 14 nanopipets, 15 and osmotic-driven fluxes, 16,17 to cite a few relevant examples. In all these processes, the adequate microscopic characterization of the dynamics of the trapped liquids represents a key element for the correct interpretation of their performances.…”

Section: Introductionmentioning

confidence: 99%

Aqueous electrolytes confined within functionalized silica nanopores

Videla

Sala

Martı́

et al. 2011

The Journal of Chemical Physics

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Molecular dynamics simulations have been carried out to investigate structural and dynamical characteristics of NaCl aqueous solutions confined within silica nanopores in contact with a "bulk-like" reservoir. Two types of pores, with diameters intermediate between 20 Å and 37.5 Å, were investigated: The first one corresponded to hydrophobic cavities, in which the prevailing wall-solution interactions were of the Lennard-Jones type. In addition, we also examined the behavior of solutions trapped within hydrophilic cavities, in which a set of unsaturated O-sites at the wall were transformed in polar silanol Si-OH groups. In all cases, the overall concentrations of the trapped electrolytes exhibited important reductions that, in the case of the narrowest pores, attained 50% of the bulk value. Local concentrations within the pores also showed important fluctuations. In hydrophobic cavities, the close vicinity of the pore wall was coated exclusively by the solvent, whereas in hydrophilic pores, selective adsorption of Na + ions was also observed. Mass and charge transport were also investigated. Individual diffusion coefficients did not present large modifications from what is perceived in the bulk; contrasting, the electrical conductivity exhibited important reductions. The qualitative differences are rationalized in terms of simple geometrical considerations.

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Section: Introductionmentioning

confidence: 99%

Aqueous electrolytes confined within functionalized silica nanopores

Videla

Sala

Martı́

et al. 2011

The Journal of Chemical Physics

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“…Their prospective applications include data storage devices, 2,3 single electron transistors, 4,5 spin-qubit arrays for quantum computing, 6 nanopipettes, 7 and nanoscale lasers. Their measurements indicated power lawlike temperature dependencies of linear conductance similar to those for empty nanotubes.…”

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confidence: 99%

Sub-Kelvin transport spectroscopy of fullerene peapod quantum dots

Utko

Nygård

Monthioux

et al. 2006

Applied Physics Letters

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“…However, in general, the CNT would be randomly deposited in the GNR trench, and thus the situation will require some energy barriers for the encapsulation dynamics. For the fullerene-CNT hybrids, Ulbricht and Hertel [66] encapsulations into CNTs [67][68][69][70]. Berber et al [67], using tight-binding MD simulations, also showed that the encapsulation process did not involve an activation energy barrier.…”

Section: Cnt Encapsulation Into Gnr Trenchmentioning

confidence: 98%

Molecular dynamics simulation study of a carbon-nanotube oscillator in a graphene-nanoribbon trench

Lee

Kang

Kim

et al. 2016

Journal of the Korean Physical Society

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Graphene/carbon-nanotube (CNT) hybrid material can be useful in energy storage and nanoelectronic technologies. Here we address the CNT-oscillator encapsulated in a graphenenanoribbon (GNR) trench as a novel design, and investigate its properties via classical molecular dynamics simulations. Since the energy barrier was very low while the CNT was encapsulated in the GNR trench, the CNT absorbed on the GNR surface could easily be encapsulated in the GNR trench.MD simulations showed that the CNT oscillator encapsulated in a GNR trench is compatible with simple CNT oscillators, so we anticipate that the CNT in GNR trench could work as an oscillator. So we can anticipate that the CNT encapsulated in a GNR trench can be applied to ultra-sensitive nanoelectromechanical oscillators, and this system has the possibility to be applied to relay-switching devices, and to shuttle memory.

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Carbon nanotubes as nanopipette: modelling and simulations

Cited by 41 publications

References 64 publications

Aqueous electrolytes confined within functionalized silica nanopores

Aqueous electrolytes confined within functionalized silica nanopores

Sub-Kelvin transport spectroscopy of fullerene peapod quantum dots

Molecular dynamics simulation study of a carbon-nanotube oscillator in a graphene-nanoribbon trench

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