Proceedings ArticleDOI
Direct Measurement of Slip Velocities Using Three-Dimensional Total Internal Reflection Velocimetry
Peter Huang,Jeffrey S. Guasto,Kenneth S. Breuer +2 more
- pp 63-65
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TLDR
In this paper, the possible existence of slip of liquids in close proximity to a smooth surface is studied experimentally via the dynamics of small particles suspended in a shear flow using Total Internal Reflection Velocimetry (TIRV).Abstract:
The possible existence of slip of liquids in close proximity to a smooth surface is studied experimentally via the dynamics of small particles suspended in a shear flow. Sub-micron fluorescent particles suspended in water are imaged and analyzed using Total Internal Reflection Velocimetry (TIRV). For water flowing over a hydrophilic surface, the measurements are in agreement with previous experiments and indicate that slip, if present, is minimal at low shear rates, but increases slightly as the shear rate increases. Furthermore, surface hydrophobicity can be attributed for additional shear-rate dependent boundary slip. Issues associated with the experimental technique and the interpretation of results are also discussed.Copyright © 2005 by ASMEread more
Citations
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Journal ArticleDOI
Slip at Fluid-Solid Interface
TL;DR: In this article, the authors discuss slip at fluid-solid interface in an attempt to highlight the main issues related to this diverse complex phenomenon and its implications, and propose a new boundary condition for non-Newtonian fluids.
Journal ArticleDOI
Direct measurement of slip length in electrolyte solutions
Peter Huang,Kenneth S. Breuer +1 more
TL;DR: In this paper, a three-dimensional total internal reflection velocimetry technique was used to compare the measured slip lengths between nonionic solutions and electrolyte solutions whose ionic concentrations have been predicted to reduce the electricity-induced slip effect to a submolecular level.
Journal ArticleDOI
An experimental study of slip considering the effects of non-uniform colloidal tracer distributions
Haifeng Li,Minami Yoda +1 more
TL;DR: In this article, the slip lengths for four different aqueous monovalent electrolyte solutions through naturally hydrophilic and hydrophobically coated fused-silica channels with a depth of 33 μm were estimated using a local method based on a new particle velocimetry technique.
Journal ArticleDOI
Theoretical analysis for photophoresis of a microscale hydrophobic particle in liquids
TL;DR: The present theory discloses that the particle surface hydrophobicity or fluid slippage at particle-liquid interface may lead to a remarkable enhancement in the particle photophoretic velocity in liquids.
Journal ArticleDOI
Three-dimensional and analytical modeling of microfluidic particle transport in magnetic fluids
Rui Cheng,Taotao Zhu,Leidong Mao +2 more
TL;DR: In this paper, an analytical model that can predict the three-dimensional (3D) transport of non-magnetic particles in magnetic fluids inside a microfluidic channel coupled with permanent magnets is presented.
References
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Journal ArticleDOI
Rapid prototyping of microfluidic systems in poly(dimethylsiloxane)
TL;DR: A procedure that makes it possible to design and fabricate microfluidic systems in an elastomeric material poly(dimethylsiloxane) (PDMS) in less than 24 h by fabricating a miniaturized capillary electrophoresis system is described.
Journal ArticleDOI
Slow viscous motion of a sphere parallel to a plane wall—I Motion through a quiescent fluid
TL;DR: Asymptotic solutions of the Stokes equations are derived for both the translational and rotational motions of a sphere parallel to a plane wall bounding a semi-infinite, quiescent, viscous fluid in the limit where the gap width tends to zero as discussed by the authors.
Journal ArticleDOI
A general boundary condition for liquid flow at solid surfaces
TL;DR: In this paper, the authors present results from molecular dynamics simulations of newtonian liquids under shear which indicate that there exists a general nonlinear relationship between the amount of slip and the local shear rate at a solid surface.
Journal ArticleDOI
Slow viscous motion of a sphere parallel to a plane wall—II Couette flow
TL;DR: Using bipolar co-ordinates, an exact solution of Stokes equations was obtained for the translational and rotational velocities of a neutrally buoyant sphere moving in proximity to a single plane wall under the influence of a simple shearing flow as mentioned in this paper.
Journal ArticleDOI
Apparent fluid slip at hydrophobic microchannel walls
TL;DR: In this article, the velocity profiles of water flowing through 30×300 μm channels were measured to within 450 nm of the micro-channel surface and the measured velocity profiles were consistent with solutions of Stokes' equation and the well accepted no-slip boundary condition.