scholarly journals Wetting, Roughness and Hydrodynamic Slip

2013 ◽  
Author(s):  
Olga Vinogradova ◽  
Aleksey Belyaev
Keyword(s):  
Hydrodynamic Slip

Effect of core hydrophobicity on the electrophoresis of pH-regulated soft particles

Soft Matter ◽  
2021 ◽  
Vol 17 (11) ◽  
pp. 3074-3084
Author(s):  
Bharti ◽  
Partha P. Gopmandal ◽  
R. K. Sinha ◽  
H. Ohshima
Keyword(s):  
Inner Core ◽  
Theoretical Study ◽  
Slip Length ◽  
Hydrodynamic Slip ◽  
Soft Particles

We propose a theoretical study on the electrophoresis of pH-regualted soft particles considering the effect of hydrodynamic slip length of the hydrophobic inner core.

scholarly journals Nusselt numbers for Poiseuille flow over isoflux parallel ridges accounting for meniscus curvature

2016 ◽  
Vol 811 ◽  
pp. 315-349 ◽  
Author(s):  
Toby L. Kirk ◽  
Marc Hodes ◽  
Demetrios T. Papageorgiou
Keyword(s):  
Nusselt Number ◽  
Poiseuille Flow ◽  
Numerical Solutions ◽  
Surface Deformation ◽  
Slip Length ◽  
Constant Heat Flux ◽  
Flux Boundary Condition ◽  
Nusselt Numbers ◽  
Dual Series Equations ◽  
Hydrodynamic Slip

We investigate forced convection in a parallel-plate-geometry microchannel with superhydrophobic walls consisting of a periodic array of ridges aligned parallel to the direction of a Poiseuille flow. In the dewetted (Cassie) state, the liquid contacts the channel walls only at the tips of the ridges, where we apply a constant-heat-flux boundary condition. The subsequent hydrodynamic and thermal problems within the liquid are then analysed accounting for curvature of the liquid–gas interface (meniscus) using boundary perturbation, assuming a small deflection from flat. The effects of this surface deformation on both the effective hydrodynamic slip length and the Nusselt number are computed analytically in the form of eigenfunction expansions, reducing the problem to a set of dual series equations for the expansion coefficients which must, in general, be solved numerically. The Nusselt number quantifies the convective heat transfer, the results for which are completely captured in a single figure, presented as a function of channel geometry at each order in the perturbation. Asymptotic solutions for channel heights large compared with the ridge period are compared with numerical solutions of the dual series equations. The asymptotic slip length expressions are shown to consist of only two terms, with all other terms exponentially small. As a result, these expressions are accurate even for heights as low as half the ridge period, and hence are useful for engineering applications.

scholarly journals STUDIES ON CELL DEFORMABILITY

1967 ◽  
Vol 33 (2) ◽  
pp. 341-347 ◽  
Author(s):  
Leonard Weiss
Keyword(s):  
Cell Types ◽  
Mechanical Effect ◽  
Cell Periphery ◽  
Detectable Change ◽  
Anionic Sites ◽  
Cell Deformability ◽  
Edta Treatment ◽  
Edta Solution ◽  
Hydrodynamic Slip ◽  
Sarcoma 37

The nonlethal procedure of incubation in EDTA solution makes the peripheral regions of ascites sarcoma 37 cells more easily deformable, as reflected in measurements of the decreased amount of negative pressure required to suck out standard hemispherical bulges from the cells into micropipettes. The facilitation of deformability was abolished after reincubation of cells in calcium-containing saline, and this mechanical parameter was partially restored to normal after reincubation in magnesium-containing saline; the mechanical effect of EDTA treatment is, therefore, thought to be due mainly to the removal of calcium from the cell periphery. As EDTA treatment produces no detectable change in cellular electrophoretic mobility, it is concluded that peripheral calcium must be bound to anionic sites deeper than about 10 A from the cellular hydrodynamic slip plane. The data are discussed with emphasis on the view that they should not be extrapolated freely to other cell types.

The Effect of Hydrodynamic Slip on Membrane-Based Salinity-Gradient-Driven Energy Harvesting

Langmuir ◽  
2016 ◽  
Vol 32 (14) ◽  
pp. 3420-3432 ◽  
Author(s):  
Daniel Justin Rankin ◽  
David Mark Huang
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Hydrodynamic Slip

Aqueous Electrolytes near Hydrophobic Surfaces:  Dynamic Effects of Ion Specificity and Hydrodynamic Slip†

Langmuir ◽  
2008 ◽  
Vol 24 (4) ◽  
pp. 1442-1450 ◽  
Author(s):  
David M. Huang ◽  
Cécile Cottin-Bizonne ◽  
Christophe Ybert ◽  
Lydéric Bocquet
Keyword(s):  
Aqueous Electrolytes ◽  
Dynamic Effects ◽  
Hydrophobic Surfaces ◽  
Ion Specificity ◽  
Hydrodynamic Slip
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