Capillary filling of confined water in nanopores: Coupling the increased viscosity and slippage

Feng, Dong; Li, Xiangfang; Wang, Xiangzeng; Li, Jing; Zhang, Tao; Sun, Zheng; He, Minxia; Liu, Qing; Qin, Jiazheng; Han, Song

doi:10.1016/j.ces.2018.04.055

Cited by 63 publications

(40 citation statements)

References 54 publications

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“…Several values of C have been obtained through fitting efforts in recent years. 41,54 Among them, Wu's work related to the obtainment of C should be highlighted, which is different from other research and only fitted by molecular simulation data, rather than utilizing experimental data. 41 Wu believes that nanoscale experimental results will be easily affected by wall roughness, nanobubbles, operation conditions and so on, which therefore cannot simulate the precise water slip phenomenon.…”

Section: Water Viscosity In the Elliptical Nanoporesmentioning

confidence: 94%

Effect of pore geometry on nanoconfined water transport behavior

Sun

Shi

et al. 2019

AIChE Journal

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Different pore shapes correspond to different interaction strengths between pore surface and molecules, which will result in discrepancy of nanoconfined water transport capacity. In this article, complex nanoscale pore shapes are represented by ellipses, which possess an excellent shape-variation physical property, that is, ellipses can gradually transition from circles to slit-like cross-sections by manipulating aspect ratio from 1 to maxima. Moreover, capturing water slip phenomenon and spatially variation of water viscosity, an analytical model for water transport capacity through elliptical nanopores is developed. Results show that (a) water slip effect plays a limited positive role at hydrophilic environment and a strong positive role at hydrophobic environment;(b) nanopores with more flat geometry feature will possess smaller enhance factor at hydrophilic environment; (c) spatially viscosity distribution is a negative factor when contact angle is lower than about 130 and turns to a positive factor when contact angle is higher than about 130 . K E Y W O R D Snanoconfined water flow, various pore shapes, water slip phenomenon, water viscosity

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Section: Water Viscosity In the Elliptical Nanoporesmentioning

confidence: 94%

Effect of pore geometry on nanoconfined water transport behavior

Sun

Shi

et al. 2019

AIChE Journal

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“…In most of the previous studies on fluid flow in nanochannels this variation in spatial viscosity, which could affect the effective shear viscosity, was not taken into consideration. This could be one of the factors accountable for the discrepancies observed in slip length and flow rate enhancement, and efforts should be directed towards addressing this challenge [156][157][158][159][160][161].…”

Section: Simulationmentioning

confidence: 99%

Fast transport of water in carbon nanotubes: a review of current accomplishments and challenges

Sam

Hartkamp

Kannam

et al. 2020

Molecular Simulation

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The intriguing mass transport properties of carbon nanotubes (CNTs) have received widespread attention, especially the rapid transport of water through CNTs due to their atomically smooth wall interiors. Extensive research has been dedicated to the comprehension of various aspects of water flow in contact with CNTs, the most prominent ones being the studies on slip and flow rates. Experimental and computational studies have confirmed an enhanced water flow rate through this graphitic nanoconfinement. However, a quantitative agreement has not yet been attained. These disparities coupled with incomplete knowledge of the mechanisms of water transport at nanoscale regimes are hindering the possibilities to integrate CNTs in numerous nanofluidic applications. In the present review, we focus on the slip and flow rates of water through CNTs and the factors influencing them. We discuss the key sources of discrepancies in water flow rate and suggest directions for future study.

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“…The L–W model assumes several ideal conditions such as incompressible Newtonian fluids, neglects the effect of gravity, uniform pore size and pore distribution, no evaporation, no effect due to hydrophobic barriers, laminar flow, and a single-phase fluid [ 50 ]. In Table 1 , are summarized some of the most notorious L–W modified equations that address the phenomena in more realistic scenarios such as the one proposed by Camplisson et al, which includes evaporation effects, Equation (2) [ 51 ], Jahanshahi et al for gravitational effects, Equation (3), [ 52 ] the Hong and Kim equation, Equation (4), which account for differences in contact angle due to hydrophobic barriers [ 53 ], and the Feng et al equation that considers the effects due to viscosity and slippage [ 54 ]. Several other approaches are extensively reviewed in the research done by Cai et al [ 50 ].…”

Section: Paper and Fibrous Materials As A Complete Platform For Biosensorsmentioning

confidence: 99%

Paper and Other Fibrous Materials—A Complete Platform for Biosensing Applications

et al. 2021

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Paper-based analytical devices (PADs) and Electrospun Fiber-Based Biosensors (EFBs) have aroused the interest of the academy and industry due to their affordability, sensitivity, ease of use, robustness, being equipment-free, and deliverability to end-users. These features make them suitable to face the need for point-of-care (POC) diagnostics, monitoring, environmental, and quality food control applications. Our work introduces new and experienced researchers in the field to a practical guide for fibrous-based biosensors fabrication with insight into the chemical and physical interaction of fibrous materials with a wide variety of materials for functionalization and biofunctionalization purposes. This research also allows readers to compare classical and novel materials, fabrication techniques, immobilization methods, signal transduction, and readout. Moreover, the examined classical and alternative mathematical models provide a powerful tool for bioanalytical device designing for the multiple steps required in biosensing platforms. Finally, we aimed this research to comprise the current state of PADs and EFBs research and their future direction to offer the reader a full insight on this topic.

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Capillary filling of confined water in nanopores: Coupling the increased viscosity and slippage

Cited by 63 publications

References 54 publications

Effect of pore geometry on nanoconfined water transport behavior

Effect of pore geometry on nanoconfined water transport behavior

Fast transport of water in carbon nanotubes: a review of current accomplishments and challenges

Paper and Other Fibrous Materials—A Complete Platform for Biosensing Applications

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