Slip of fluid molecules on solid surfaces by surface diffusion

Shu, Jian-Jun; Teo, Ji Bin Melvin; Chan, Weng Kong

doi:10.1371/journal.pone.0205443

Cited by 3 publications

(4 citation statements)

References 20 publications

(31 reference statements)

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“…The same mechanism applies even for the surface diffusion of large organic molecules with a planar structure, for which a strong bond with the substrate was assumed, as reported for a perylene derivative on a semiconductor surface . A similar mechanism has been proposed for the lateral diffusion of solvent molecules in contact with the surface, which may secondarily affect the mobility of the adsorbed molecules. The other process observed for the aggregation of R123 dye molecules is interparticle diffusion . In this case, a dye molecule must acquire sufficient energy to not only get released from the original adsorption site but also to leave the particle completely.…”

Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 56%

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Adsorption of Dye Molecules and Its Potential for the Development of Photoactive Hybrid Materials Based on Layered Silicates

et al. 2023

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The present paper gives a brief account of the latest advances in understanding of the mechanism and implications of dye adsorption with a special focus on layered silicate surfaces. It has been clearly demonstrated that the controlled adsorption of novel or already well-known dyes has equally great yet unexplored potential. In principle, the well-engineered surface confinement of the molecules may lead to their aggregation, adsorption, or intercalation-induced fluorescence emission even with conventional dyes, which are not considered as luminophores in solutions or in the solid state. We envision the utilization of silicate-based heterogeneous systems to produce novel polymer blended films or structured liquids, as well as to develop a plethora of other photophysical and biomedical applications.

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Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 56%

Adsorption of Dye Molecules and Its Potential for the Development of Photoactive Hybrid Materials Based on Layered Silicates

et al. 2023

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“…With the recent rapid development of computational science and technology, microscopic simulation has become an effective tool for understanding the microscopic behavior of liquid-solid interaction, especially the interface velocity of liquid on a solid wall [29,30,31]. It is documented that the nanoscale flow behaviors are mainly dependent on surface roughness [32,33,34] and wettability [35,36], liquid properties [37], and shear rates [34,38,39].…”

Section: Introductionmentioning

confidence: 99%

“…Wan et al [41] studied the slip length of liquid flow through rough solid-liquid interfaces in a restrained space using perturbation expansion and the Dyadic Green function, and the results showed that the total slip length at a solid-liquid interface is proportional to the slip length arising from the chemical interaction. Shu et al [31] explored the slip mechanism of fluid on a solid surface in terms of surface diffusion and proposed a re-adsorption mechanism for interface velocity slip. The previous investigations confirmed that the solid wall properties highly affected the liquid flow behaviors at the interface.…”

Section: Introductionmentioning

confidence: 99%

Role of Solid Wall Properties in the Interface Slip of Liquid in Nanochannels

et al. 2018

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A two-dimensional molecular dynamics model of the liquid flow inside rough nanochannels is developed to investigate the effect of a solid wall on the interface slip of liquid in nanochannels with a surface roughness constructed by rectangular protrusions. The liquid structure, velocity profile, and confined scale on the boundary slip in a rough nanochannel are investigated, and the comparison of those with a smooth nanochannel are presented. The influence of solid wall properties, including the solid wall density, wall-fluid coupling strength, roughness height and spacing, on the interfacial velocity slip are all analyzed and discussed. It is indicated that the rough surface induces a smaller magnitude of the density oscillations and extra energy losses compared with the smooth solid surface, which reduce the interfacial slip of liquid in a nanochannel. In addition, once the roughness spacing is very small, the near-surface liquid flow dominates the momentum transfer at the interface between liquid and solid wall, causing the role of both the corrugation of wall potential and wall-fluid coupling strength to be less obvious. In particular, the slip length increases with increasing confined scales and shows no dependence on the confined scale once the confined scale reaches a critical value. The critical confined scale for the rough channel is larger than that of the smooth scale.

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Influence of design parameters of upstream Venturi pipeline on multiphase flow measurement

Mengke

Razali²,

Moitra

et al. 2023

Engineering Applications of Computational Fluid Mechanics

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A multiphase flowmeter (MPFM) is used in the upstream oil and gas industry for continuous, inline, real-time, oil-gas-water flow measurement without fluid separation. An MPFM typically consists of phase-fraction (holdup) and velocity (or flow rate) measurements. It is desirable to have homogeneous flow at the measurement location so that the phase-fraction measurement is representative. A horizontal blind-tee pipe-section is often installed to homogenize flow in the downstream vertical Venturi-based flowmeters; however, little information is available on the effect of horizontal blind-tee depth (HBD) on flow homogeneity. In addition, the Venturi vertical entrance length (VEL) leading to the Venturi inlet from the horizontal blind-tee outlet is another design parameter that may potentially affect the downstream phase distribution. The phasefraction measurement principle requires liquid properties (e.g. water salinity). The local liquid richness makes the horizontal blind-tee an ideal location for measuring liquid properties; however, an excessive HBD may affect the reliability of the measurements of liquid properties, because local vortices may degrade liquid measurement representativeness if the local liquid velocity is too low. This study uses a computational fluid dynamics approach to evaluate the effect of HBD  Corresponding author.

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Slip of fluid molecules on solid surfaces by surface diffusion

Cited by 3 publications

References 20 publications

Adsorption of Dye Molecules and Its Potential for the Development of Photoactive Hybrid Materials Based on Layered Silicates

Adsorption of Dye Molecules and Its Potential for the Development of Photoactive Hybrid Materials Based on Layered Silicates

Role of Solid Wall Properties in the Interface Slip of Liquid in Nanochannels

Influence of design parameters of upstream Venturi pipeline on multiphase flow measurement

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