Special Issue on “Transport of Fluids in Nanoporous Materials”

Gao, Xuechao; Ji, Guozhao; Bhatia, Suresh K.; Nicholson, D A

doi:10.3390/pr7010014

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…Here δA is the potential barrier for the intrusion of the liquid into the pore. According to (1), the pores are accessible if they can be filled at a pressure of P as a result of fluctuation filling. However, filling can only occur as a result of a kinetic process in a finite time τ 0 ∼ w −1 0 .…”

Section: Kinetics Of the Formation And Decay Of An Unstable Suspensiomentioning

confidence: 99%

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The Formation and Decay of an Unstable State of a Suspension of Hydrophobic Nanoporous Particles under Rapid Compression

Borman

Tronin

2021

Nanomaterials

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The study of non-wetting liquid transport in a nanoporous medium is stimulated by the possible use of this process to absorb or accumulate mechanical energy. The filling of nanopores of suspended particles with a non-wetting liquid under decay of the unstable state, when the pressure increase rate is much higher than the rate of volume change, is studied. Based on the new experimental data and a theoretical model of the interacting modes of the spontaneous filling and filling under rapid compression, a picture of the percolation transition and a mechanism of liquid transport under such conditions are proposed. It is shown that a new dynamic filling threshold P0 is reached. It is shown that the filling of the porous medium is the result of the slow mode of impact compression when the fast mode of spontaneous filling is continuously adjusted to the slow mode on a small time scale. The theoretical model of the interacting modes is based on the solving of a system of kinetic equations for the distribution functions f(n,t) and F(n,t) clusters of filled pores under rapid compression, respectively. It is shown that filling at P=const corresponds to the non-dissipative transport of liquid on a time scale smaller than the characteristic filling time. The proposed model quantitatively describes the experimental data. So, the response of suspension to impact is characterized by the positive feedback.

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Section: Kinetics Of the Formation And Decay Of An Unstable Suspensiomentioning

confidence: 99%

“…The problem of describing fluid transport in a nanoporous medium, due to the fundamental complexity of the necessary consideration of fluid correlations in pores of different locations and high demand for various applications, has been the focus of attention for many decades [1,2].…”

Section: Introductionmentioning

confidence: 99%