Coulombically Driven Rolling of Nanorods on Water

Vuković, Lela

doi:10.1103/physrevlett.103.246103

Cited by 15 publications

(14 citation statements)

References 30 publications

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“…A similar mechanism of unidirectional rotary motion has been established recently for the carbon nanotubes (CNT) on the water surfaces. 49 Initial light excitation creates the asymmetry of the charge distribution on the wall of the CNT. The latter effect leads to nonzero torques, eventually rotating the CNT unidirectionally.…”

Section: Methodsmentioning

confidence: 99%

Unidirectional Rolling Motion of Nanocars Induced by Electric Field

Akimov

Kolomeisky

2012

J. Phys. Chem. C

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Understanding microscopic mechanisms of motion of artificial molecular machines is fundamentally important for scientific and technological progress. It is known that electric field might strongly influence structures and dynamic properties of molecules at the nanoscale level. Specifically, it is possible to induce conformational changes and the directional motion in many surface-bound molecules by electric field in scanning tunneling microscopy (STM) experiments. Utilizing a recently developed theoretical method to describe charge transfer phenomena for fullerenes near metal surfaces, in this work we theoretically investigated dynamics of fullerene-based nanocars in the presence of external electric field. Our approach is based on classical rigid-body molecular dynamics simulations that allow us to fully analyze dynamics of nanocars on gold surfaces. Theoretical calculations predict that it is possible to drive nonpolar nanocars unidirectionally with the help of external electric field. It is shown also that charge transfer effects play a critical role in driving nanocars and for understanding mechanisms of the directionality of the observed motion. Our theoretical predictions explain experimental observations on moving nanocars along metal surfaces.

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Section: Methodsmentioning

confidence: 99%

Unidirectional Rolling Motion of Nanocars Induced by Electric Field

Akimov

Kolomeisky

2012

J. Phys. Chem. C

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“…Powered rotational motion combined with orientational diffusion produce an effective translational diffusion with an unusual chiral character. Recent advances in mechanisms for inducing rotary motion at the nanoscale [21,22] also suggest possible extensions of these phenomena to smaller length-scales, particularly when the dynamics are compatible with orientational fluctuations and symmetry is broken to obtain orbital motions.…”

Section: Introductionmentioning

confidence: 99%

Chiral diffusion of rotary nanomotors

et al. 2013

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Neither a purely deterministic rotary nanomotor nor a purely orientational diffuser exhibits longterm translational motion, but coupling rotation to orientational diffusion yields translational diffusion. We demonstrate that this effective translational diffusion can easily dominate the ordinary thermal translational diffusion for experimentally relevant nanomotors, and that this effective diffusion is chiral. Unpowered chiral particles do not exhibit chiral diffusion, but a nanorotor has both handedness and an instantaneous direction of powered motion, thus -unlike an unpowered particle -its diffusional motion can distinguish left from right.

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“…The water evaporation of bulk surface such as a lake or a river is a classical topic and has been studied for long time [2][3][4] . Recent works show that the nanoscale confined water and water restricted on the surface of solid materials is ubiquitous in nature [5][6][7][8][9][10][11][12][13][14][15] , e.g. the ice-like water monolayer on top of a hydrophilic 6,16,17 or a hydrophobic [18][19][20][21] solid surface.…”

Section: Introductionmentioning

confidence: 99%

Evaporation of Tiny Water Aggregation on Solid Surfaces with Different Wetting Properties

Wang

Wan

et al. 2012

J. Phys. Chem. B

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The evaporation of a tiny amount of water on the solid surface with different wettabilities has been studied by molecular dynamics simulations. From nonequilibrium MD simulations, we found that, as the surface changed from hydrophobic to hydrophilic, the evaporation speed did not show a monotonic decrease as intuitively expected, but increased first, and then decreased after it reached a maximum value. The analysis of the simulation trajectory and calculation of the surface water interaction illustrate that the competition between the number of water molecules on the water-gas surface from where the water molecules can evaporate and the potential barrier to prevent those water molecules from evaporating results in the unexpected behavior of the evaporation. This finding is helpful in understanding the evaporation on biological surfaces, designing artificial surfaces of ultrafast water evaporating, or preserving water in soil.

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Coulombically Driven Rolling of Nanorods on Water

Cited by 15 publications

References 30 publications

Unidirectional Rolling Motion of Nanocars Induced by Electric Field

Unidirectional Rolling Motion of Nanocars Induced by Electric Field

Chiral diffusion of rotary nanomotors

Evaporation of Tiny Water Aggregation on Solid Surfaces with Different Wetting Properties

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