Computational modeling of a rotary nanopump

Lohrasebi, A.; Jamali, Yousef

doi:10.1016/j.jmgm.2011.04.007

Cited by 23 publications

(7 citation statements)

References 20 publications

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“…In these approaches, an external force is generated using mechanical, electrostatic or acoustic principles to pump the fluid. [14][15][16][17][18][19][20][21][22][23] These techniques may provide efficient ways to transport fluids in nanochannels for various applications, such as nanoparticle sorting, biomolecule separation, and chemical analysis. 1,3,24 Recently, we studied nanochannel flows and found that the coupling of temperature and surface effects could lead to different flow fashions.…”

Section: Introductionmentioning

confidence: 99%

Fluid transport in nanochannels induced by temperature gradients

Liu

Ya²,

Li³

2012

The Journal of Chemical Physics

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We investigate the mechanisms of fluid transport driven by temperature gradients in nanochannels through molecular dynamics simulations. It is found that the fluid-wall interaction is critical in determining the flow direction. In channels of very low surface energy, where the fluid-wall binding energy ε fw is small, the fluid moves from high to low temperature and the flow is induced by a potential ratchet near the wall. In high surface energy channels, however, the fluid is pumped from low to high temperature and the pressure drop caused by the temperature gradient is the major driving force. In addition, as the fluid-wall interaction is strengthened, the flow flux assumes a maximum, where ε fw is close to the lower temperature T L of the channel and ε fw /kT L ≈ 1 is roughly satisfied.

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Section: Introductionmentioning

confidence: 99%

Fluid transport in nanochannels induced by temperature gradients

Liu

Ya²,

Li³

2012

The Journal of Chemical Physics

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“…It has inspired a lot of application studies for fabricating an NEMS from CNTs over the past decade, such as gigahertz oscillators [3][4][5][6][7][8][9], switch [10], bearings [11,12], nanopump [13,14] and motors [15][16][17][18][19][20]. For the interlayer motion of multi-walled carbon nanotubes (MWCNTs), both of the rotational and translational motions may exist, which suggests signal transmission with a nano device.…”

Section: Introductionmentioning

confidence: 99%

A nano converter from carbon nanotubes with multiple output signals

Cai

Yin

Zhang

et al. 2016

Computational Materials Science

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“…It was shown that the travelling waves on the nanotube surface, which were generated by two oscillating tips, caused the transport and ejection of a C20 molecule in the SWNT. Recently, in a MD-based simulation study [11], a nanoscale rotary motor powered by the flow of ions was investigated. In our previous work [9], we proposed a rotary nanoscale pump, constructed of CNTs and graphene blades, using classical MD simulation.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, in a MD-based simulation study [11], a nanoscale rotary motor powered by the flow of ions was investigated. In our previous work [9], we proposed a rotary nanoscale pump, constructed of CNTs and graphene blades, using classical MD simulation. This nanopump was able to produce a density gradient between the nanopump sides and also to separate a mixture of two different gases.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics modelling of an electrical-driven linear nanopump

Lohrasebi

Nouri

2012

Molecular Simulation

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The dynamics of an electrical-driven linear nanopump, consisting of a carbon nanotube, a C60 þ molecule and a graphene sheet, has been simulated via the application of the molecular dynamics method. In this nanopump, the nanotube and the graphene sheet are used as the sleeve of the pump and the boundary between the two sides of the nanopump, respectively. By exposing the nanopump to an external alternative electric field, the C60 þ molecule will be oscillating linearly in the nanotube. We found that the linear oscillating motion of the C60 þ molecule causes the gas atoms to flow through the nanotube, and a density gradient is generated between the two sides of the nanopump. Also, it was observed that the frequency of the external alternative electric field affected the pump performance in the generation of the density gradient amount. The maximum performance occurred at a specific frequency of the electric field. This specific frequency can be computed by an analytical formula for given materials and temperatures. Moreover, the results indicate that the length of the nanotube can affect the gas pumping.

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Computational modeling of a rotary nanopump

Cited by 23 publications

References 20 publications

Fluid transport in nanochannels induced by temperature gradients

Fluid transport in nanochannels induced by temperature gradients

A nano converter from carbon nanotubes with multiple output signals

Molecular dynamics modelling of an electrical-driven linear nanopump

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