Giant amplification of interfacially driven transport by hydrodynamic slip: diffusio-osmosis and beyond

Details Giant amplification of interfacially driven transport by hydrodynamic slip: diffusio-osmosis and beyond Giant amplification of interfacially driven transport by hydrodynamic slip: diffusio-osmosis and beyond

2006-05-22

arxiv.org/abs/cond-mat/0605512v1

PRL, vol 96, 186102 (2006)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.96.186102

We demonstrate that "moderate" departures from the no-slip hydrodynamic boundary condition (hydrodynamic slip lengths in the nanometer range) can result in a very large enhancement - up to two orders of magnitude- of most interfacially driven transport phenomena. We study analytically and numerically the case of neutral solute diffusio-osmosis in a slab geometry to account for non-trivial couplings between interfacial structure and hydrodynamic slip. Possible outcomes are fast transport of particles in externally applied or self-generated gradient, and flow enhancement in nano- or micro-fluidic geometries.

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