Nanofluidic transport governed by the liquid/vapour interface

Lee, Jong-Ho; Laoui, Tahar; Karnik, Rohit

doi:10.1038/nnano.2014.28

Cited by 174 publications

(156 citation statements)

References 47 publications

Supporting

Mentioning

148

Contrasting

Order By: Relevance

“…As a whole, using the CTRW model and Arrhenius equation, we can well explore the physical insights of our simulation results for the water flow and translocation time. Interestingly, the increasing behavior of water flow with temperature is similar to a recent experiment; while different diffusion behaviors of the single‐file water have also been experimentally observed …”

Section: Resultssupporting

confidence: 86%

Temperature dependence of the transport of single‐file water molecules through a hydrophobic channel

Yang

2016

J Comput Chem

View full text Add to dashboard Cite

Although great effort has been made on the transport properties of water molecules through nanometer channels, our understanding on the effect of some basic parameters are still rather poor. In this article, we use molecular dynamics simulations to study the temperature effect on the transport of single-file water molecules through a hydrophobic channel. Of particular interest is that the water flow and average translocation time both exhibit exponential relations with the temperature. Based on the continuous-time random-walk model and Arrhenius equation, we explore some new physical insights on these exponential behaviors. With the increase of temperature, the water dipoles flip more frequently, since the estimated flipping barrier is less than 2 kB T. Specifically, the flipping frequency also shows an exponential relation with the temperature. Furthermore, the water-water interaction and water occupancy demonstrate linear relations with the temperature, and the water density profiles along the channel axis can be slightly affected by the temperature. These results not only enhance our knowledge about the temperature effect on the single-file water transport, but also have potential implications for the design of controllable nanofluidic machines.

show abstract

Section: Resultssupporting

confidence: 86%

Temperature dependence of the transport of single‐file water molecules through a hydrophobic channel

Yang

2016

J Comput Chem

View full text Add to dashboard Cite

show abstract

“…4b). Usually, conventional gas transport between remote nanobubbles includes condensation, transmission and evaporation steps 29 . However, in case that two Ostwald ripening nanobubbles come into contact with each other, the gaseous particles seem to diffuse as a discrete packet from one to another through the ultrathin water membrane without hydration, which needs to be importantly considered for the assembly and function of biomolecules and other systems where nanoscale gas state is involved.…”

Section: Resultsmentioning

confidence: 99%

Growth dynamics and gas transport mechanism of nanobubbles in graphene liquid cells

et al. 2015

View full text Add to dashboard Cite

Formation, evolution and vanishing of bubbles are common phenomena in nature, which can be easily observed in boiling or falling water, carbonated drinks, gas-forming electrochemical reactions and so on. However, the morphology and the growth dynamics of the bubbles at nanoscale have not been fully investigated owing to the lack of proper imaging tools that can visualize nanoscale objects in the liquid phase. Here, we demonstrate for the first time that the nanobubbles in water encapsulated by graphene membrane can be visualized by in-situ ultra-high vacuum transmission electron microscopy. Our microscopic results indicate two distinct growth mechanisms of merging nanobubbles and the existence of a critical radius of nanobubbles that determines the unusually long stability of nanobubbles. Interestingly, the gas transport through ultrathin water membranes at nanobubble interface is free from dissolution, which is clearly different from conventional gas transport that includes condensation, transmission and evaporation.

show abstract

“…1,2 Therefore, a molecular level understanding of fluid transport is critical to pursue novel opportunities in biochemistry, drug delivery technology and medical diagnostic devices. [10][11][12][13] Nevertheless, the study of flows confined inside nano-structures presents challenges to the application of macroscopic theories of fluids due to the fact that inherent to the nanoscale confinement, the extremely large surface to volume ratio and the short time and length scales dominate the fluid transport. [10][11][12][13] Nevertheless, the study of flows confined inside nano-structures presents challenges to the application of macroscopic theories of fluids due to the fact that inherent to the nanoscale confinement, the extremely large surface to volume ratio and the short time and length scales dominate the fluid transport.…”

Section: Introductionmentioning

confidence: 99%

Early regimes of water capillary flow in slit silica nanochannels

Oyarzua

Walther

Mejı́a

et al. 2015

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Molecular dynamics simulations are conducted to investigate the initial stages of spontaneous imbibition of water in slit silica nanochannels surrounded by air. An analysis is performed for the effects of nanoscopic confinement, initial conditions of liquid uptake and air pressurization on the dynamics of capillary filling. The results indicate that the nanoscale imbibition process is divided into three main flow regimes: an initial regime where the capillary force is balanced only by the inertial drag and characterized by a constant velocity and a plug flow profile. In this regime, the meniscus formation process plays a central role in the imbibition rate. Thereafter, a transitional regime takes place, in which, the force balance has significant contributions from both inertia and viscous friction. Subsequently, a regime wherein viscous forces dominate the capillary force balance is attained. Flow velocity profiles identify the passage from an inviscid flow to a developing Poiseuille flow. Gas density profiles ahead of the capillary front indicate a transient accumulation of air on the advancing meniscus. Furthermore, slower capillary filling rates computed for higher air pressures reveal a significant retarding effect of the gas displaced by the advancing meniscus.

show abstract

Nanofluidic transport governed by the liquid/vapour interface

Cited by 174 publications

References 47 publications

Temperature dependence of the transport of single‐file water molecules through a hydrophobic channel

Temperature dependence of the transport of single‐file water molecules through a hydrophobic channel

Growth dynamics and gas transport mechanism of nanobubbles in graphene liquid cells

Early regimes of water capillary flow in slit silica nanochannels

Contact Info

Product

Resources

About